recently i had been reading a lot of supercharging on Z3. and i found that a new type of electronic charge is being research.

the theory is:
Electronic Fan force air ---> air intake & manifold ---> Engine ---> manifold ---> midpipe--->exhaust---> Extracting Fan.

in this process it increase the speed of a normal engine process rather than force air increase the air into the engine only. its not a turbo cause it doesn't recycle air from exhaust. it need tuning but it will also theoritically eat up fuel like no one's business.

anyone hear this before? i heard the new Lexus LF-A is using this system.

Please merciful Lord, not the Bilge Fan blower again!

Life is too short for this.

S

ya the "fan" anyone know how it really works?

or may be the fan is actually a real compressor?

the only innovation is it's ability to suck in the uniformed ....

ya, but waste of unburn fuel oh?

Are you talking about the fans you can buy for dirt cheap from a boat store? They are used to vent the fumes out of a boat (with an inboard motor). Other wise if you try to start the boat you will blow it up.

People were getting rich buying them for 24$ and selling them for 120$ as a E-turbo.
It's a fan, not a compressor.

i am not sure about that, but i think the best example is the Lexus LF-A.
it might and it might not be. well it might properbly be. hehehe

Thats a 100,000+$ car

I have never heard of the lf-a using that because lexus engineers know better. Its just a fan and not a compressor. Why would the lf-a need that to make 500 hp. It has a high revving v-10, perfectly capable of 500hp without alternate induction stuff.

There is actually a company out there producing electric superchargers. They aren't super cheap though. Maybe they would make sense if you were building a hybrid and already had a nice big battery pack onboard.

You can't "blow" more air into an engine without an increase in pressure. I don't think that even has a sound basis in theory. You can run a supercharger off an electric motor, but if you look at the overall efficiency of it, it's probably less efficient than being belt driven.

similar discussion in the NE region forum from last week: http://www.rx8club.com/showthread.php?t=103495
We found it entertaining if not useful.

turbodyne is a farse, never had any product, all vaporware, while electric chargers seem to sound good, I believe there is only one person in the world that ever made one work, thomas knight... and his system is as expensive as any normal kit, and heavier, noisier, more prone to failure

http://www.boosthead.com/about.php

go ahead and read my friend, he offers normal and electric ones, these are no joke systems and if you take the plunge you will most likely get the power, but also a product that will fail under high loads and destroy your engine in the process, I have known some sad stories on this stuff

Electric Supercharger


Maybe you've seen the tires melt on our ESC™-charged test vehicles at Moroso Motosports Park. Maybe you've seen our feature article in Turbo Magazine and the full-page ads in Power Pages, Turbo, and Sport Compact. Or maybe you've seen the buzz across hundreds of message boards and want to know why everyone is so excited about "another POS bilge pump fan that cannot possibly work."

Well, we have news for you. This is real technology. From a real company. With real test results to back our claims (see "Additional Files" to the right). This is not another eBay leaf blower...

Then what is it?

Our patented ESC™ 350CM is a high-performance electric supercharger powered by extra batteries instead of your engine's belt. It can add huge hp gains on stock engines up to 3.0L.

What's it made out of?

The core of our ESC™ 350c is a centrifugal type supercharger. This durable unit flows up to 6 psi** in less than a second and is rated up to 400 hp. Its impeller is turned by a custom-wound electric motor. Most components are CNC-machined, 60-16 T6 aircraft aluminum. Every unit is made-to-order by Thomas Knight, thoroughly tested and backed by our competitive 1-year warranty.

Electric motor? Then it must run off your alternator, right?

Wrong. For years, drawing current straight from an alternator was the misguided approach of engineers unable to think outside the box. It simply isn't possible for an alternator to produce enough current to power a real supercharger.

Then where does the power come from?

At the push of a button, an ultra-lightweight battery bank injects the drive system with bursts of pure energy. And you can use either regular car batteries, or MIL-SPEC type, specifically designed for hardcore use and fast recharge. Most importantly, they're totally independent from your vehicle, so you don't suffer the parasitic loss under boost that a turbo or supercharger robs from your engine. Because this is a universal system, we do not supply these batteries, but we can help you customize your setup towards a specific application. For the average user, we suggest two regular batteries; for competition racers, we recommend the awesome BATCAPs, or Odyssey high-CCA batteries (only 13 lbs each).

Why only short bursts?

Think of these batteries as your Nitrous tanks. Like Nitrous, the ESC's instant boost is currently limited in duration, but unlike Nitrous, that restriction will gradually disappear as battery technology improves. Eventually, high-volume capacitors will allow for almost perpetual usage. Until then, a typical battery bank will yield several runs before recharge. And unlike Nitrous, our system will not cost you thousands of dollars in long-term refilling expenses. Most Nitrous users go through at least 1 bottle/week, and at $30 to $45 per bottle, that's a hidden charge of $1,560 a year, every year, forever. Think about it! With our system, you will never deal with costly refills again.

No more refills?

Well, not quite. There is no such thing as free energy. Even our system needs to be recharged, but in this respect, the universal, open-ended design allows for hundreds of ways to do so. It could be as simple as hooking up to a regular battery charger in your garage twice a week, or as futuristic as solar panels. You can upgrade to a high-output alternator like those that power competition audio systems in the future. With a 200-amp alternator, you'll fully recharge quickly while the ESC™ is off. So while you're waiting in the staging lanes or cruising along the strip, you can relax and hurl insults at the Nitrous guys while your system preps for another power burst of awesome boost.

There's more than enough power to remind those high school kids with the neon muffler bearings who their daddy is.

What about the extra weight?

It's a non-issue. Our new centrifugal ESCs weighs 17 lbs, (battery weight varies). In comparison, a full turbo kit can easily weigh 100lb, while most belt-driven superchargers weigh 90 lbs. As you can see, the "extra weight" is not a real argument Plus, no parasitic loss means greater horsepower, so our ESC™ more than makes up for the difference.

Our new centrifugal ESCs weighs 17 lbs, (battery weight varies). In comparison, a full turbo kit can easily weigh 100lb, while most belt-driven superchargers weigh 90 lbs.i think the greddy kit is around 65 lbs. I'm just guessing - but it didn't seem like all the boxes added up together would weight anywhere close to 100 lbs. biggest weight would be the turbo, exhaust manifold and intercooler. The pipes and hoses are very lightweight.

battery weight may vary, but they didn't provide any weight for them in their claim

and you remove parts/weight to install a turbo kit, you have to look at the net change not just the weight of the kit i.e. the OE exhaust manifold weighs 17 lb and is replaced by the new turbo manifold, etc.

Here's a prototype.
Just hook up 3 batteries & go.. :hahano:
http://208.62.166.66:82/guest/pics/misc_RX-7/electric supercharger.jpg

Ok let me make sure I got this right… This company is marketing an electric super charger that is only 17lbs that can pump up to 6LB of pressure in less than a second and is rated to 400HP?! Pardon my ignorance but how the hell can a turbine smaller than a leaf blower pump so much air? I would seriously love to see the science behind this… let alone running off of a battery. I am actually wondering if this thing can even provide the air needed by an 8 at WOT.

Oh wait I found my answer… As it was clearly pointed out by silverwolf in the other thread we had going about things like this (http://www.rx8club.com/showthread.php?t=103495) the 8 STOCK runs at 400CFM but this thing clearly states its MAX is 455CFM *see Quote*

“Want to know more?
Please read our extensive FAQs before you contact us. Most of your questions are answered there. We offer payment plans with $1K deposit, military/LE discounts, an R&D program, rebates, and partial sponsorships.
• Includes blower ONLY
• Fits most engines up to 3.0L
• Drive System consists of one 8HP electric motor
• Power Source is an independent, non-parasitic battery bank
• Max Recommended PSI 5 PSI on a stock engine
• Maximum CFM 455 CFM
• Maximum HP 400 hp
• Maximum Duration 15 seconds
• Installation Time 8+ hours. Requires basic mechanical, advanced electrical knowledge”

So if my math is correct, at full burst (for that 15 seconds) its only giving 55CFM of air to the 8?? How the hell can this thing be rated to 400HP? What are they dyno’ing with (if anything at all? A go kart? A Honda? What? Besides doesn’t 6LB of pressure produce more air than 55CFM that at WOT?

**Yells** ROTARY GOD!!!! Get your ass in here!!

Now that I think about it, doesn’t a can of air produce more pressure than that?
Me thinks this is ANOTHER overpriced turbonator… But hey you get a FABULOUS 1 year warranty on it :shocking: Hmm I wonder what the return policy is?

You know what i think i got a better idea...

Why dont we all go to sears and pick up one of these (http://www.sears.com/sr/javasr/product.do?pid=00915201000&vertical=Sears&BV_UseBVCookie=Yes) and pop it in the trunk and rig it to the engine. This right here is a gaurenteed 135LB of pressure for $36.99! :rollingla

You could also do a search and get your answers immediately:
http://www.rx8club.com/showthread.php?t=17303&highlight=electric+supercharger

Guys i just found out a product which is exactly the same as the theory i made earlier. gain small amount of power with just enough HP.

check out:
www.electricsupercharger.com

Yup, that's your basic bilge blower fan, told you it would be.....

Life is too short for this. "TAKE ME NOW, LORD!!"

S :angel:

http://www.electricsupercharger.com/images/eRAM_SEMA_05_Product_photo.JPG

Yup, that's your basic bilge blower fan, told you it would be.....

Life is too short for this. "TAKE ME NOW, LORD!!"

S :angel:

http://www.electricsupercharger.com/images/eRAM_SEMA_05_Product_photo.JPG
the E-RAM is a piece of shite, I thought we were now talking about the thomas knight units, which I have seen in person, (if memory serves me right) at some drag strips, I even talked to a guy there and got to find out what they were, in no way did it look like a bilge fan into an intake like the Eram crap...

anyways, just thought you guys should know of thomas knight

:hahano: the eram makes 800CFM of air now?? can they prove that to me? :Eyecrazy: how in the hell? LOL....

Thomas or Geoff Knight himself actually posted in this thread:
You could also do a search and get your answers immediately:
http://www.rx8club.com/showthread.p...ic+supercharger

hah! thats why forum is great! i almost been trick into buying "The Fan"

Interestingly, the E-RAM guys have posted on their site WHY their E-RAM works versus why others don't work and have answered some of the negative comments.

http://www.electricsupercharger.com/buyersguide.shtml#eboostbasics1

Note- At the above link, they even compare the E-RAM to a leaf blower to show the difference.

The SUPER E-RAM is suppose to put out something like 27 HP for $596 dollars. Funny thing though, dual inline bilge fans should be more like $50 dollars (Hahahahah...). When you compare the E-RAM to CAI, RAM Air intakes, and various exhaust systems its a decent "bang for the buck" (of course that is if it works).

An interesting argument about this is comparing this to a CAI and RAM AIR INTAKE systems like from Racing Beat.

Many, even at this site and some experts, have proved that various RAM AIR Intakes work. Why? As the car goes faster, it takes in more air. The ECU compensates by adding more fuel to the air and thus more HP.

Why wouldn't an electrical system blowing air into the intake, not have the same effect???

If those guys are lying, than how are they wrong???

1. Is their E-RAM not getting enough "power" from the battery?

2. Is the E-RAM not putting out enough AIR to really make as much HP as it claims?

3. Does it have to do with the air not being compressed enough? Oddly, nobody makes this argument with RAM Air Intake systems.

I'm curious about what some of the supercharger guys like RP (would be interesting if he talked about their AXIAL FLOW design), HYMEE, Pettit people, RotaryGod, and other advanced members here at RX8Club have to say about this.

Also, it would be beyond cool to have some of the E-RAM people show up and debate this too.

E-RAM Contact info:

e-RACING MOTORSPORTS PHONE #:
(831) 685-3278

e-RACING MOTORSPORTS E-MAIL:
info@electricsupercharger.com

Link- http://www.electricsupercharger.com/contactus.shtml

No offense, but are you blind? This is the 3rd time I'm posting this thread:
http://www.rx8club.com/showthread.php?t=17303&highlight=electric+supercharger
All the answers and calculations can be found in this thread.

Are you expecting people in this forum to re-write old answers or what?

Ok, where to begin?

1st off globi I did not create this thread if your comments are being directed at me. Why not attack the orginal creator of this thread?

2nd, the other thread is mostly 2004 comments and this is 2006 going on 2007. Since 2004, the "serious" electric superchargers have undergone changes.

3rd, there are 2 "major" electric superchargers. The other thread mostly talks about the Thomas Knight electric supercharger, and this one was talking about the e-RAM electric supercharger.

4th, the electric supercharger option should be explored. The is because of its "Return On Investement". A Blitz supercharger costs near $5,000 dollars (and the others are around the same or MORE) to give you like a 50 HP boost (and the others are 60 to 80 HP). The Super e-RAM is claiming that for $600 dollars it can give you 27 HP. This includes them posting dyno results and videos verifying the e-RAM's performance and the guy owns a patent for it.

Despite having potential, the Geoff Knight electric supercharger does not appear cost effective. You are talking extra batteries, limited boost time, extra weight, extra space requirements, etc.... for about the same cost or almost as expensive as a Blitz, Axial Flow, Pettit, Hymee, etc... supercharger.

On the otherhand, the e-RAM is cost effective (IF it works), therefore could be an option. So, I was thinking about some serious debate. Calling the e-RAM a piece of sh*t, without proof, may be unjustified.

The e-RAM website has actually made point for point arguments defending their product from comments similar to one in this and other threads. If the guy is a fraud, than it would be interesting to prove it. If not, and the guy is legit, than his electric supercharger should be a viable option because of its price to HP ratio.

I am just gonna say this to you, buy an e-ram... install it and then see for yourself, if it does not work you can sell it on ebay, heck I bought the magnaflow exhaust for my 8 and then sold it once I figured out how horrid it is, (I hate it, not the tone for me)

I however will simply save enough money for a turbo or a pettit unit, (I like the pettit set up) but that will be once I have the car paid off february 2008

2nd, the other thread is mostly 2004 comments and this is 2006 going on 2007. Since 2004, the "serious" electric superchargers have undergone changes.
Who cares whether they have changed or not?
The calculations are based on 200 year old thermodynamic laws and the were valid back in 1853 as well as 2004 and my guess it they are still valid in 2006 as well as the year 3006.

On the otherhand, the e-RAM is cost effective (IF it works), therefore could be an option. So, I was thinking about some serious debate. Calling the e-RAM a piece of sh*t, without proof, may be unjustified.
The proof is in the calculations and therefore justified.

Despite having potential, the Geoff Knight electric supercharger does not appear cost effective. You are talking extra batteries, limited boost time, extra weight, extra space requirements, etc.... f
There is a very justified reason that you need all these extra batteries - without serious power in there is no serious power out.

globi, I've seen numerous threads and posts which attack the e-RAM. The calculations go back and forth too, on both sides. and both sides make numerous assumptions.

Its much better to see practical results like dyno runs, G-timer results, and actual experience.

Geoff Knight, the inventor of the other viable electric supercharger, has somewhat vouched for the e-RAM as he had access to a customer that bought and used it on his car.

There is nothing about the e-RAM concept that will indicate that it can not work. The concept is viable. Actually, regardless if it works or not in this form, I think its a good idea. So I'm curious about it and want one.

Its a matter of whether or not the device delivers the performance that it promises. Even some of its most negative critics argue about the level of performance and HP results and not that it does not completely work.

I consider this like an exhaust, CAI, Pulleys, etc... that make HP or performance claims. You can find people on both sides of the debate that will say a product does or does not work. When it comes to saying something does NOT work, I rather they actually put their money where their mouth is, bought it and then say it was a piece of crap. Debating formulas, is very, very problematic.

In the case of the e-RAM many of the people that have negative comments have never owned one, tried one, or were comparing it to some other device that has nothing to do with the e-RAM.

Instead of debating formulas, I'm contemplating buying one (still waiting on their response to some of my e-mails to them) and seeing if it will really work. I have a G-Timer and would see some performance gain, if there is any to have. If it does NOT work, than trust me, I will be quick to let other RX-8 owners know. If it works somewhat or does fully deliver, than I will let people know what I learned.

Also, the e-Racing/e-RAM offers a refund if you can prove no performance increase via dyno or G-Tech. That's at least fair and better than what you get from many other products that claim performance gains. I'm checking if they will accept G-Timer results too.

Here's a thought or two for you to think about sosonic. I too was quite interested in this idea a year ago and finally came up with the following problems with the marketing/scientific arguements for things of this type (that I've never tested out, but still believe to hold true). See if they make sense too you too. It took the air (lol) out of them for me.

These little fans can produce lots of CFM, perhaps as much as they say. That's great. But we do need boost pressure too at that rated CFM, otherwise we're not really doing anything NA "sucking" of air to the cyclinder or rotor doesn't get done with simple atmospheric pressure differential.

This is where these tales of cheap HP start fall apart. They can produce some small static pressure with little to no flow (like .5 or 1 PSI) OR they can produce some air flow volume with little to no static pressure. But doing both at the same time ... I don't see how they can.

What the "real deals" like super/turbo chargers produce (and why they are expensive) is sufficent air volume (CFM) AND at a pressure of several PSI above atmosphere at the same time. You can see this looking at their pressure/flow curves. At high flow volumes they show high boost pressures. These cheaper imitators don't do that - they can do some of one or some of the other, but not enough of both at the same time. Result - little to no on the road improvement - just what you'd expect for the price.

Example - There is no PSI pressure in air going fast (stick your hand out the window at 100mph - neat huh? But no air under pressure is to be found there - only volume flow past your hand. Put a tube out the window with the back end blocked and a pressure sensor there. Some (very small) pressure is there, but no volume.

The electrical issue is another problem. Short run times may not be important on the street, but for other track use, it's a problem as the performance envelope is pushed whenever possible, and usually 100s of times in the course of an hour.

What do you think?

I dont know why people get fooled into these things.

Look at the size of that thing, its barely big enough to cool my CPU. (im exaggerating).

The DC available from the cars batteries is just not enough to create sufficient boost (for the price).

You are talking about the energy from the exhaust forcing a 'fan' or the mechanical force of the engine itself through the crank pulley to spin a 'fan'. These create much more work than a few batteries will. And with a TC/SC you dont have to add anything to get that power, its already created by the engine.

You would need a massive power source to be able to create enough force to get enough boost to matter. The machine I work on runs on 208V 3 phase AC from large about 50lb amps, to power linear motors, and I can still make them overload if I push on the device hard. And thats some serious power.

You may see a SLIGHT increase in power on a dino, but a dino doesnt factor in weight. How much do all those extra batteries weigh that you need to power that thing, for what 15 seconds? And you get what, 5HP? For $2500!!!!

This guy Knight, has got to be LOL at the people who buy these things. Hes just lucky, that there are enough stupid people to actually pay for these things. Heck, people bought pet rocks.......

I bet you could stop the fan with a pencil.

But see my issue is its better to have somebody actually try it than just to claim its a scam. I can be up in here saying RB ram ducts are big scams and other people can say they work, so who is right? I can say all the "proof" that RB offers is total crap. I rather people told me they bought it, did a test, and then make a claim.

e-Racing is even offering refunds if their product fails to provide a performance increase, so why not take them up on it?

Its no big deal for me to check if its real or not. I will "slap it on", check performance gains with a g-timer (as its pretty cheap and easy for me to do) and go from there. I'm not afraid and will put my money where my mouth is. If it does not work, than I will know for SURE that it does not work and will let everyone know about it. If it does, than I will pass that info. along to.

Of all the things you can do in life or with an RX-8, this is not so big to do.

Keep in mind that the blades for the fan are in the intake pipe. They can cause resistance if they are not flowing enough. If it is only used for short bursts then the time it is resting will cause resistance. :sad:

Its no big deal for me to check if its real or not. I will "slap it on", check performance gains with a g-timer (as its pretty cheap and easy for me to do) and go from there. I'm not afraid and will put my money where my mouth is. If it does not work, than I will know for SURE that it does not work and will let everyone know about it. If it does, than I will pass that info. along to.

Of all the things you can do in life or with an RX-8, this is not so big to do.

Cool dude, go for it. One word of caution I got from those folks... they told me there was not enough room for one of these under the RX-8 hood wo/removing the stock intake, and certainly not enough for the dual fan one. Other than that... slap her in there and have a go :naughty: Let us know what happens on a G-Tech and on the track if you can.

You may see a SLIGHT increase in power on a dino, but a dino doesnt factor in weight. How much do all those extra batteries weigh that you need to power that thing, for what 15 seconds? And you get what, 5HP? For $2500!!!!

This guy Knight, has got to be LOL at the people who buy these things. Hes just lucky, that there are enough stupid people to actually pay for these things. Heck, people bought pet rocks.......

Don't bash Knight. He is the only one that produces an electric supercharger which provides serious power.
If you take 3 12V batteries and each providing 600 A you end up with 22kW or roughly 30 hp, which easily results in over 100 extra hp's.
Yes maybe you only have boost for 20 seconds. But if the car takes 6s from 0 to 70 what are you gonna make with the remaining 14 seconds? Knight compares electric superchargers with nitrous and this is a valid comparison. Charging your batteries is done automatically and is less expensive than buying nitrous bottles.
If you want to bash something, bash that e-RAM which according to the website draws 0.8 kW, with most probably less efficient electric motors than Knight uses. The e-RAM is not a purposely designed compressor and draws 30 times less power, so there's your answer.

But again you guys should read the other thread instead of re-discussing what has already been discussed.

e-Racing is even offering refunds if their product fails to provide a performance increase, so why not take them up on it?


Well, the thing is...if we start with the assumption that someone is selling a bilge pump, without admitting that it is a bilge pump--and selling it for inflated prices--then it's not a big jump to assume that they are not going to honor their warranty either. Or give honest dyno numbers.

Having said that, if you want to give it a shot, go for it. I do wish there were more options for real HP increases in the sub-$3k price range and wish you the best.

edit2: well I'll be damned, they did actually win several SEMA awards.

http://www.sema.org/main/semaorghome.aspx?id=56281 (ctrl + F and type in "e-ram")

Although it also says that the awards were selected by journalists from 37 different publications, so I'm considerably less impressed than if it had been voted on by a panel of experienced racers or engineers.

So is anyone gonna do it?

Another thought: If we're talking about something which is not much more than an air-moving device with a motor attached, why not use a turbo as a starting point? An actual turbo by itself (without boost controller, BOV, ECU, headers, etc) can be had cheaply, right? At least from what I have read here (http://www.rx8club.com/showthread.php?t=97855). So take the compressor side of a cheap turbo, and drive it with a motor. I doubt that would do anything either, but at least that would seem somewhat more plausible, at lower RPM's perhaps. Frankly even if this thing did make 7% more power or whatever, I would be leery of using it, simply because the fan looks like a flimsy little piece of stamped sheetmetal that could fly apart and get sucked into the engine.

OK, some simple -and a bit simplistic- math: your 6port renesis produces 170kW of power (230HP). The eRAM is a 0,8kW device, that if it was 100% efficient could possibly mean 0,8kW of energy transfered to the motor.
So, AT BEST, this device could provide an additional 0,8kW or roughly 1HP to the engine....any way you look at it, this is not very probable.....

ace - on that logic a belt driven supercharger will only add the amount of power it takes to drive it :Eyecrazy:

ace - on that logic a belt driven supercharger will only add the amount of power it takes to drive it :Eyecrazy:

Not quite the same. You also have to take into account the multiplication that happens with the gears of the supercharger, or the a.r ratio for a turbo, so mechanics (leverage/axle) come into play...not to mention turbine design, flow dynamics etc,...

In any case, the energy used by a turbo (heat/velocity of exhaust gases) or the HP sapped off the shaft by a supercharger is near or in the double digits of percentage of the total power output, which is adequate power to actually provide the necessary pressure in order to produce any real tangible results in the intake charge.

In this case, the power used by the e-turbo actually spins directly the compressor side, so nothing of the above apply here. Hence the 0,8kW are simply not nearly enough to provide any serious amount of boost (notice how the site mentions 1psi, or 1,7psi for the 1,7kW version). 1,5psi would roughly equal to about 4-5% increase, but hey, 2-4% is the margin for mechanical and instrument error, or engine power output fluctuation.....not to mention that a properly working ramair will produce almost 2psi of pressure above 200kph....

Even if this does work (which I'm sure is debatable even you had the unit in your hands and very accurate instruments to measure its performance), it is simply another stupid way to waste 400$...invest the same amount in a decent piggyback and some dyno time, and you'll see way better results ;)

You also have to take into account the multiplication that happens with the gears of the supercharger, or the a.r ratio for a turbo, so mechanics (leverage/axle) come into play...not to mention turbine design, flow dynamics etc,... wtf?
You could get 5 times as much power with a supercharger than without one - especially if it is one without parasitic loss such as an electric supercharger.
So with 0.8kW in you might get 4kW out, but since this fast spinning electric motor (0.8kW is the electric power consumed and not the mechanical power produced) and since the sheet metal blades are not quite as efficient you might get 2kW, so roughly 3hp. Which is not far from what a CAI would bring and therefore not that bad after all.

wtf?
You could get 5 times as much power with a supercharger than without one - especially if it is one without parasitic loss such as an electric supercharger.
So with 0.8kW in you might get 4kW out, but since this fast spinning electric motor (0.8kW is the electric power consumed and not the mechanical power produced) and since the sheet metal blades are not quite as efficient you might get 2kW, so roughly 3hp. Which is not far from what a CAI would bring and therefore not that bad after all.

And I'm saying something different ? The turbo uses the wasted energy of the exhaust gases, while the supercharger saps energy off the shaft in order to do the same thing. The additional energy equivalent introduced into the system is the extra o2 forced into the air/fuel mixture, causing it to contain more chemical energy, thus producing higher resulting kinetic energy.

However, both turbo and s/c multiply the force of the impeller by altering the ratio of rotation for the compressor, while this is not the same as the e-turbo. The fact remains: the energy used by the e-turbo is simply not enough.

The TKT might be a valid effort, but look at what it entails....

e-Racing will accept G-Timer computerized results. GT-2 G-Timer data can be uploaded to a computer. So they will accept Dyno test, G-Tech, or G-Timer test results. If there is no performance increase than you can request a refund. You have to admit, they appear to be standing behind their product.

On the RX-8 it appears that an AEM or Mazdaspeed CAI in combination with the inline super e-RAM (about 27 HP increase claim / 1.7 PSI) would be the most likely setup. But would add more cost to the setup and bring it around or above $1,000 dollars (though there should be some slight additional HP increases from the CAI too). With going with the stock box, instead of AEM and Mazdaspeed CAI, the issue is getting the inline super e-RAM after the MAF and having enough intake tube.

Example setups-

http://www.electricsupercharger.com/selectionguide.shtml

so .. are you going for it?

I'm going to mount one in the rear bumper, and hook it up to a bubble bath sump! Thanks for the find :)