Does anybody run FI with nitrous?

Do the Greddy kit and Zex for example get along nicely?

Can that be considered overkill reliabilitywise?

 

Before anyone else comments, I know that they are going to mention "with the proper modifications to the greddy kit" or something like that. Im just waiting for it. BTW, I have no clue reliability wise.

 

Don't believe it has been done. Contact Charles R. Hill, he wanders these forums. He's our respected nitrous specialist. I am sure he would have some information for you.

 

But why not just get a bigger turbo or go for more boost on the turbo?

 

you don't need both. That being said I would do more than a 55-hp shot of nitrous, which is equal to about 6psi of boost. So you have to turn down the boost to 6psi or less under nitrous.........I just don't see the point

 

spend $300 on a boost controller.

 

Just ask Ike for directions to your local Mitsubishi dealership and get yourself an Evo dude....

 

I thought of it as well. Since greddy boosts early but does not hold full boost at higher PRM, it may be an option to come on as boost falls off....who knows?

 

I'm far form an expert, but in general terms, doesn't nitrous help turbo systems? Compressed air heats up, so nitrous injected into the intake manifold and that stream of compressed hot air would effectively lower the temp of the intake charge the same way a cold air intake or intercooler lowers it, thus yielding more HP. Again, that's only in THEORY.

When I installed nitrous on my v6 Eclipse, I looked into this also, and the results were pretty beneficial, but that wasn't a rotary engine. With the amount of heat the rotary puts out, it might make sense, but with the 55 shot or so limit of the engine, it might not be worth the cost of the system ($1500 or so with a lot of track required safety accessories here in AZ).

You can always get a Nitrous Express Ntercooler system. It sprays nitrous through your intercooler to help it cool your boost charge. A buddy of mine who built a 315 whp Nissan Sentra Spec V here got a 32hp or so gain on the Dyno just by spraying through his intercooler last fall.

I still have my nitrous system in storage here waiting so I can test this out next year when I boost my 8. Good luck!

 

1) Yes, lots of people have nitrous and FI. However I don't know of any RX-8s that do this.

2) The GReddy kit can barely get along with itself let alone a nitrous setup. It really is all in the tuning and if you have to ask then don't bother.

3) See last sentence of #2.

edit: What are your power goals? How is the car used? The FI + nitrous systems I'm familiar with utilize turbos which are far to big for street use and some nitrous for bottom end power until the turbo gets spooled. Not practicle for daily driving at all and not even suitable for a race track unless your idea of a race track is a 1/4 mile long straight.

 

If you took a quick look at my signature
Do you really think I'm going to be a Mitsu owner, ever

 

Wasting expensive nitrous to cool the intake air

Would the simple CO2 with some pieces on intake and in intercooler do the trick?

You would need a CryO2 Tank and Installation Kit

And then you can add something like -> CryO2 Cryogenic Air Intake or -> CryO2 Intercooler Sprayer or both

You can even have a Fuel line freezer

 

It has been done. A forum member ( can't recall his name) had that setup on a show car for a while. He has since sold the car. He had that setup shortly after the GReddy kit came out.

 

There was a pick of a red 8 with INGS kit floating around here. I believe the owner had nitrous plus the GReddy kit. If you are interested, I would search for the thread, and contact the owner.

 

Thanks for the offer, Moostafa.
looks like I will go with the boostcontroller
and maybe think about the Cryo2 later

but first i have to get my coils and plugs replaced ASAP
and my E-Manage Ultimate upgrade kit is still somewhere
within the postal system.

 

CryO2 sounds and looks interesting, but what about real world results?

 

well cry o2 really helps durign heat soak conditions... wehn your intercooler is becoming sluggish you can take the heat soak right out of it with a quick blast... i have seen drag cars use it right as they line up... it allows the air to be cooler then ambiant temps thus making the air more dense as it passes through the intercooler.... giving you an advantage over the person nect to you sucking in 120+ intake air temps... but i could be wrong because it is late and i am tired

 

Yeah, I agree. But we already had the systems (3 of them) from previous cars, so it was cheaper and easier than selling the systems and buying new cryo. Plus we knoew more about nitrous so it was safer for US at the time.

 

i dont remember where i heard this from, but doesn't the residue created from burning automotive grade nitrous damage turbos blades when they pass through?

not sure

 

if its an intercooler spray setup - shouldnt be an issue. ive actually been wanting to do the intercooler spray - but im lazy.

-hS

 

I had the Cryo setup on my car. Definitely interesting when you spray it before you lined up. Froze up the IC vanes nicely. At a $1/lb. it was much cheaper than nitrous ($4/lb.) and accomplishes the same thing.

 

Ever thought about spraying a very small amount of nitrous into the the pipe right before the Intercooler?
The idea behind it is that that will give nitrous enough time to completely evaporate and mix in with the air, thus significantly cooling it.
At a small amount of it, like say 5-10 hp shot, a bottle will last you indefinitely and when activated at WOT via Drive by Wire (like in Zex) is going to provide a continuous cooling effect while the car is operated under high load.

Too bad i sold the Zex Nitrous Kit last year, I would love to try it out on my car.

 

It has been done some years before in Greece...The greddy was set to 0.7bar dyno tuned and also with nitrous and again tuned...Not a problem for some hard driving...I cant contact that guy though cause he sold it...

 

https://www.rx8club.com/rx-8-multimedia-photo-gallery-6/some-pics-my-modified-rx8-94955/

 

Have you thought about getting the Mazsport motor mounts and bolting a 2871R or 3071R to the manifold?

Of course I would get injectors and fuel pump just to be safe.