Jcola

I have looked everywhere for this and haven't found anything on it, but I just would like to know what the 3 tubes are for on the intake before the throttle body? looks like one leads to the oil reservoir and the other two go to the intake further down where the vdi valve and the hard pipe for the air pump are. The REAL question is that if I were to add a turbo or supercharger kit, wouldn't the added psi mess with these tubes????

Ricky SE3P

iTrader: (10)

if you dont even know where these lines go... you arent anywhere near prepared to turbo or supercharge the car... just words of advice..

wcs

iTrader: (2)

Bullshit you looked everywhere.
+1 on what Xero Ryuu said not to mention all the other available information out there that you'll need.
Like the impact of boost on those hoses.
Try searching and reading a bit harder

I'll even start you off:

https://www.rx8club.com/series-i-tec...iagram-214910/

Used Simple google search site:rx8club.com vacuum line

Oh and this was the 7th thread result using the forums search
https://www.rx8club.com/series-i-tro...nipple-248244/

Right before it was the Greddy Turbo Kit FAQ by Rotarygod
https://www.rx8club.com/series-i-maj...em-here-59834/

Jcola

i did find some things about the hoses such as the diagram of where they go, but like i said my main question was what would happen if you added boost to them?

also the forum search is nothing more then a google search, i have used it many times and it does not bring up what i need answered.

Carbon8

iTrader: (4)

The only one that you would have to worry about is the OMP injector vaccum line, and I am not exactly sure how that works to be honest. I can't se it being an issue as all FI guys other than adding a catch can still route the other two lines to the intake post MAF and don't experience complications

Jcola

thanks carbon8 for answering positively. Wcs i appreciate helping me with my answer, its just that my questions are very specific. Xero i know that boosting is a big deal and i am admitting that it is beyond my knowledge, but for my application this boost kit i am looking at requires no tuning, no modifications and has about 5psi of boost which is all i want. So that's why i was just wanting to know what would happen to these tubes if boost were added.

i can delete the thread once the question is answered if need be.

if i have aroused interest about the kit i am talking about then i can make a new thread about it if that's what y'all want me to do?

there is a thread similar to it but i don't think its the same.

thanks guys

Carbon8

iTrader: (4)

Buy a couple spare motors while your at it, your gona blow all of them in a very short time period

Jcola

the kit is legitimate, it will do no harm to the motor what so ever, installation is around 1-2 hours and can be easily removed. I feel it would be perfect for the 8 since the low end torque is not great.

only thing that might be in need of upgrade are fuel injectors seeing as how the A/F ratio can get lean.

Carbon8

iTrader: (4)

5 PSI without a tune is not legitimate and i give less than 5K miles and the motor will blow.

You can not add FI on a RENISES without a tune, it just doesn't work. Your MAF scaling will be crap, your A/F will be erratic you will ping and you will blow a seal. Timing is the same, going FI requires adjustments, some even switch to different plugs because of the issues it creates.

Its clear you have a lot of research ahead of you the mention of injectors is evident that you have no idea what you are doing or really need, or I hope you have deep pockets. Even respectable kits with excellent tunes and supporting mod's rarely see more than 30K miles before the engine needs an overhaul. Thats for people running 6-8PSI.

Jcola

you're definitely right, there is no doubt that tweaks will need to be made. The blower is mounted between the MAF sensor and throttle body so from what research has been done the MAF would be stable. Plus I have cobbs access port so i can adjust the tune based on the application, or get a MM tune which would be the better way to go.

Carbon8

iTrader: (4)

Its not that the MAF wont be stable, the calibration will be off which will make A/F tuning nearly impossible.

What kit are you referencing?

Jcola

I had sent a private message carbon8

wcs

iTrader: (2)

Tell me how is this ^^^ a very specific question.
This is questions ... not question.

I gave you an advanced google search
Let ME be specific

Enter in google without the quotes "site:rx8club.com vacuum line"

You say no modification here but keep reading oh then you need modifications.
What are you doing man?

Oh and yes, you've raised much interest in this kit please post a link.

And just so I'm not being a complete ******* (and you're really starting to make me wanna be one)

Here are what the 3 hoses are:
Jet Air Hose was marked with a yellow patch (line)
Air hose from the OMP is marked in a white patch (line)
The oil filler breather hose is quite obvious and you should have no trouble finding this one

Here's the exact specific thread you'll need for a Greddy setup however you'll need to determine what is what with your setup.

https://www.rx8club.com/series-i-maj...uff-up-211884/

In a draw thru setup basically two of the hoses connect between post Maf and pre turbo with the third going post turbo.
You're going to have to figure out yourself which ... enuf from me now

I'm just going to sit back and eat popcorn

200.mph

iTrader: (9)

ibftl, i want to know what turbo requires no tuning/mods and only takes an hour to install for 5psi. waiting for answers, i need them now. im so gonna tear up the dragon in april with this kit. op please link the kit so i can haz boost

RIWWP

iTrader: (2)

An inherent part of a turbo kit is the exhaust manifold, which has to be designed to A) mount the turbocharger to it, B) route all exhaust flow to the turbine, and C) mount within the space available

I challenge anyone to be able to replace their manifold with a custom one that works around the factory engine mount in less than 2 hours.

Not to mention the presence of an intercooler and all the piping from the turbo to the intercooler and the intercooler to the throttle body, which usually requires taking the front bumper off. Removing the bumper and replacing it could be done in less than an hour, but probably not someone who hasn't done it several times already.

Considering the OP said "blower", and "mounts between the MAF and throttle body" (rather than "pull through setup"), I'm guessing it's one of these:



In which case yeah, tuning is not required.

RIWWP

iTrader: (2)

Actually, here it is:
Electric Supercharger 5 PSI Vortex




For the ultimate proof, it blows over a stick and makes a roll of packing tape roll away. WHAT AWESOME POWWWWAAAA!!!

200.mph

iTrader: (9)

where do i buy? i want someone who has more experience than riwwp with fi to sell me on this. op can you post a link please?

Carbon8

iTrader: (4)

He was talking about an electric charger unit that is designed for the BRZ, provides 5 PSI for 1.5 seconds under WOT.

http://www.phantomsuperchargers.com/...ubaru-brz.html

I don't see it ending well

Stray

Subbing for lolz

Gravey

iTrader: (3)

So that thing uses an electric motor to spin the turbine?

Jcola

The kit seems to be a good way to get a little more power from the get go. I know that the stock seals can take up to 5 psi and NO more then that. The 5 psi isn't constant it slowly decreases the more gears you go through. If y'all don't think it is such a good idea then by all means I won't think I'll be trying it.

But what problems would arise if someone were to take this kit and put it on an 8?

RIWWP

iTrader: (2)

Yeah.

The basic point that every single one of those kits fails to acknowledge/address is that electric fans are great a MOVING air, but not good at compressing it. Even 1 PSI of pressure on the output side means that the fan blades have to maintain their torque against being spun backwards to let the pressure out. Actual turbochargers work because the exhaust pressure on the input side of the exhaust side turbine is greater than the air pressure on the output side of the intake. If this is reversed (such as when you close the throttle plate and reduce the exhaust flow suddenly without a proper blow off valve in place) then that's when you get compressor surge and the damage that results.


At 5psi, a 3" intake pipe would be exerting ~35lbs of pressure against the fan blades trying to spin them backwards. You are going to need a lot of torque from that motor. Torque goes down as RPM goes up for any electric motor though. Going from 500rpm to 1,000rpm drops the torque by about half. You would also need a lot of current going through the motor. At 12 volts, a single phase motor is going to draw about 100 amps per horsepower, and you are going to need 5-8hp to compress the air.

Even with the 24v that the link indicates it runs at, those batteries need to be able to dump 250-300 amps over a very short period of time. The article says 1.5 minutes of continuous use, which is roughly equivalent to needing a 10,000 amp hour battery. A 250amp hour battery weighs around 150lbs, so you are looking at adding 3,000lbs to your car to produce the electrical current needed to run the motor that you need.

Edit:
Napkin math all around, but even if I'm off by half on everything....

9krpmrx8

iTrader: (46)

RIWWP

iTrader: (2)

To answer this specific question, you probably will have some disruption of the air flow around the MAF sensor, which might cause a CEL and some power loss. Otherwise the only other problem is that your bank account is a bit more empty.

Point blank, it CAN'T reach 5psi, under any conditions. At full throttle, I'm also betting that the engine is already flowing more air than the fan possibly could, meaning the fan is actually a restriction at that point.

Short story: They are scamming their customers. Any benefit is pure placebo.

I also don't think you, or their customers, realize how significantly 5psi will change a naturally aspirated car, much less one with a high compression engine. This isn't a little pick up, it's a rather significant increase. It isn't something that "it seems a bit faster".

5psi can easily blow the stock seals, depending on how well it's tuned, and staying on the factory tune at 5psi is considered "a bad tune".

Jcola

Riwwp, they have done many dyno tests with the kit, dyno results say that it can get up to about 5psi. There are many dyno runs that they have posted on the website with videos. Also I have Cobbs access port so once installed I could tune it to be happy with the compressor