I still thinkyou should compare the performance w/the stock intake

it's a pain in the ass to put back on and then refab the nitrous kit and make the stock filter work with the kit. But, Charles R. Hill has the setup with the stock intake.

So you have a constant spray when you floor it?
How often would you have to refill the bottle? (i drive pretty hard, pretty generic question, but i just want to get a feel for often ppl normaly refill their bottles.)

Is there more stress on the engine / drive chain to use nos instead of turbo? since you increase the hp instanly?

..

The spray is constant while at WOT. I have been spraying and purgeing since mid week and I have gone from 700 to 500 psi. It's a hard question to answer, they both put more stress on the engine, I guess it would depend on what shot size you use (ie. 55, 75, 100, 150, 300).

Thanks for the good explanation Charles. So, from what I gather the reason why people go with sc / turbo instead of NOS is mainly due to operational costs? It seems to me that they do exactly the same; slam more air into your engine.

It seems to me that NOS might stress the internals more since the increase in
HPS is not linear but immediate. But the stress is probably close to that with a
turbo which suddenly slams 5+ psi more air into your engine, or does the turbo
add air with less PSI when you are under lower RPM?

If the NOS only comes on at WOT it sounds kinda dangerous, if you are going through a curve and suddenly you have 55+ more HPS at the wheels. From what I gather turbo / sc keeps on slamming air into the engine even when you are not under WOT, so it seems to be a more friendly for the "end user" who does track and not just straight line racing. Pleace arrest me if I'm wrong.

What I have trouble understanding is how the ECU can work this out properly. From what I have read the ECU uses static maps when it is under WOT, and it
does not read data from the o2 sensor. So how in the world can we tune properly? Is it just "to be on the safe side, let's go way rich" type of tuning or?

*ponder*

Charles do you have a picture of this intake of yours? I'm curious to see it...
And when you say 'almost crashed' you mean he totalled the car?
Thanks

I completely agree with Charles, you should learn to drive the car and "be at one with the car" before you try adding things like Nitrous/ Turbo/ Supercharger. And keep in mind all these things do require extra matience and upkeep, not so much with the nitrous, but FI requires lots of upkeep. As Charles siad this system is idiot proof, it doesn't take long to install. My install took much longer due to the extras and the fiberglass bottle holder. But basicly run the lines from the trunk threw the drainage plug, there are factory hooks under the car where the fuel lines run and there is an extra one which is great to hang the nitrous lines. Mount the box, switches, wire them up, tap the fuel line, put the nozzle in your intake, tap on to the Throttle positioning sensor, and select the correct fuel and Nitrous jets for the amount of power you wish to run. And that's it "Your Spraying". The process becomes more complex once you go above the 55 shot since timing has to be adjusted and you might want to look into some different spark plugs. I'll get some better pictures as soon as may car gets back from the dealership, looked at it and as far I can tell the radiator seperated, so rather than tearing into everything and braking it and since my RX-7 still doesn't have an engine in it I just flatbedded it to the dealership, this way I will have my means of transportation back a hole lot quicker.

I’m going to sign up for driving academy at Nashville Speedways (it is normally a nascar oval, but they have a track course in the center of the oval) in late February to learn more about my car, myself and how to drive properly. Depending on how well / bad that goes I will decide weather or not my car needs any upgrades.

NOS / FI is far down on the list though. My first upgrade is going to be new tires and possibly rims. Then sway bars and new flywheel. Then new springs and lower the car a tad. If the car still behaves nicely I will consider nos / fi.

Point of order - FI requires NO special upkeep; just change the oil as you would normally, and don't treat the car like you hate it. Now, the car DOES require the operator to monitor things; but as far as maintenance goes, its little different than before.

Also, I doubt ANYONE here has had their car long enough to 'be one with the car' - what we have is a few owners who are simply 'good drivers'. Good drivers can drive well in any car. If this forum follows trends, i'd say 5% of the membership is a 'good' driver. 15% are 'accomplished', 60% are 'average', 15% are 'below average', with the remaining 5% being 'poor' drivers.

Sometimes even poor drivers have enough will and money to add power to their cars. And frankly, adding 50hp to the car won't make it into an Enzo-killer. A mid-high 13 second car is quick, no doubt, but especially with N2O, that power is more-often applied ONLY during straight-line acceleration. Thru the twisties, the power, especially N2O, likely won't be the difference-maker.

:D

everyone listen to charles and dmp.
Remember this is a car that is home on a road track. That is the enviroment it was engineered for--hence the almost mid engine mount, the dual gastanks mid car, the awesome stock brakes etc,etc. Yes you can make a straight line redlight to redlight car out of it(charles can make anything!) but you cannot take the road track out of this car. Therefore horsepower alone does not necessarly make this car faster for its designed purpose. Nos has its advantages,FI has it's advantages,porting has it's advantages. For one I would not recommend any major horsepower upgrades until you put in some track time and see where you with your individual driving style needs the improvement.
The list of mods are now growing after we have been waiting for over a year and the individually of the cars are going to become more and more apparent.as it should be.
zoomzoom guys
olddragger
ps all come to Road Atlanta and check it out

Yes, but some times owners can't even do that, and I would hate to see an someone purchase a turbo a ruin it, plus there are other things like a turbo timer, if you don't have a turbo timer pulling up and cutting the car off can damage a turbo, there are a lot of mistakes you can make that will kill a turbo, there are very few that will kill the ACTUAL Zex system. Plus it is no easy plug and play job for an unexperienced mechanic.
It was just an exression, hence the quotation marks and also, I don't think it takes many people over a year to figure there car out and "become on with the car". I race formula ones and it doesn't take but a few races for me to become adjusted to a new car/ setup.
I realize that someone who has the money can go out and buy the kit with out any preperation it was just a piece of advice. And yes 55 extra HP isn't a great differnce but is one none the less and if you use it wrong you can damage your engine. Yes as others have stated Nitrous isn't popular in road course racing, but in DRAG Racing which is also a popular form of racing it is, why is it everyone thinks that Drag racing is so bad, and everyone thinks that if a car is built for, or handles right in one aspect it can't be changed for another. I have seen Dodge Caravans go out on Drag Strips, where they weren't designed for from the factory OHOH :eek: , and walk down other cars, it's all about what YOU want it to do, build it right and it will do it. Has anyone seen the 20b powered RX-8 in the NHRA which happens to be doing pretty well.

I am interested to see how a RX-8 with Nitrous and FI will do, sence I am interested in doing it as well.

on the way
 

I have the nitrous express intercooler spray kit, and greddy turbo kit on the way. It will be at at Archer Racing all of march getting installed, tuned, dyno'd and whatever it takes to run flawlessly. I'll let you know how it goes. I have the type rs bov, pro fec b boost controller, and having archer replace my apex seals, and i'm going to have two boost settings, 8 psi, and 12 psi.

Are you using MazdaManiac's avatar?

heh, I thought it was Jeff posting for a second there...

so, how much
 

how much was the whole setup??

cost of parts
 

I get everything for cost, being I work through Pro Motion Distributing. I got the greddy turbo kit, type rs bov, greddy turbo timer, pro fec b boost controller, egt and boost gauge, and nitrous express intercooler spray kit with a 10 lb. bottle all for 4,167 dollars

The ZEX kit was, $600 since they had to custom cut the lines since they don't actually make a kit for the RX-8. After Purge kit, blue Purge light and Bottle pressure guage it was another $200.

Why did you have to fab. a new fuel line?Im going to order this kit soon and was wondering if I will have to do that.Also do I have to get a purge kit or does it work fine without?I know I will get a tank gauge but Im thinking that is all I will need extra.
Thanks,Shark

I did the same fuel line mod, it just makes it easier to tap into. The purge just clears Nitrous and condensation from the lines. I would suggest it, so you don't get water in your engine. Earlier when I said the lines had to be custom cut I meant ZEX cut them to length at the factory. They don't give you much extra.

Sounds good,I will try to add the purge to my order.Thx

I think you will like it, it's a fun little show. Everyone was betting I would waste my first bottle on purgeing. I got the blue purge light, so my purge cloud actualy lights up blue. :cool:

I would like to see a picture of that :):):)

I'll try to grab some more photos tonight. Some time next week I will get to a dyno and see what I am laying down.

I guess we will find out next week! :D

watching with interest
olddragger