n2o plus turbo.... any experience? - Honda Prelude Forum

blackomega · 06-19-2002, 03:57 PM

me and a friend have a crx that we have a turbo on... now, not knowing much about nitrous, i ASSUME that i can put a 50 shot or so on. however, it seems that the main problem would be to go lean, then i would be kissing everything goodbye. i would need a rising rate fuel pressure regulator and big enough pump and injectors.... we have 440's on it now, should we go to 550 with nitrous running too? main thing is that i cant go lean right??? or am i missing something fundamental here?

Paul M Ellis · 06-19-2002, 04:18 PM

Hey, i know one kid,he had a 99 trubo prelude,he had nitrous too but only a 30 to 40 shot,i dont know why small.i know it was a NOS system.

2GYellowP · 06-19-2002, 06:39 PM

why do people always insist on pairing NAWS with turbo? TURN UP THE BOOST!!!! thats why u got a turbo right...3-4psi is better than a 50 shot, and safer...rediculous

blackomega · 06-19-2002, 07:17 PM

you obviously dont know much about boost. or nitrous, seeing as how you didnt answer the question. you cant simply "turn up the boost"

now, if anyone knows an ANSWER to this question, please post it.

SH_Luder · 06-20-2002, 12:23 AM

Well, I can't say I know much, but I have a buddy who has a b16a in a crx, with a turbo, and NOS. He uses a small shot of NOS just to spool the Turbo and lessen lag time. I will ask him if he needed to adjust fuel or anything else that he might want to let you know and get back to you.

laughin2.2 · 06-20-2002, 01:39 AM

The only real advice that I can give on this subject is that it would be easier to run an NX single fogger kit than a dry kit. This is because you won't have to worry about running bigger injectors, since the wet kit will provide the additional fuel and send it into the intake.

blackomega · 06-20-2002, 11:23 AM

so youre saying that with the single fogger i WOULDNT need a pump or injectors, etc.?? just connect the hose to the intake and im set? still have to adjust air/fuel setting though of course?

laughin2.2 · 06-20-2002, 01:49 PM

You may or may not need a new fuel pump. If you are really close to maxing it out without the nitrous then you will need a larger one, but if your pump can move enough fuel to handle your injectors and the fuel solenoid's pull then you won't need one.

You will not need new injectors however, becuase the single fogger kits spray both nitrous and fuel through one fogger nozzle mounted on the intake about 6 inches from the TB.
As long as your car is tuned well off of the bottle the only AF tuning that you'll have to do for the nitrous is to make sure that you have the correct fuel and nitrous jets in.
A good example is my car. I am running a direct port kit with .016 fuel jets and .022 nitrous jets, fuel rail, fpr, ignition, intake, and exhaust. The jets are what the NOS tech recommended. When I dyno'd I had an A/F of 10.5. Obviously the NOS tech gave me a jet combo that would cause me to run rich, thus making it less likely for me to blow my motor. However I didn't make as much power as I could have, so I need to go back and put in smaller fuel jets.
basically, you'll have to put in the recommended jets for your desired shot, do a couple dyno pulls to check your AF, and then adjust your jet combo if needed.

blackomega · 06-20-2002, 04:29 PM

sweet, thanks

laughin2.2 · 06-21-2002, 04:36 PM

GaRn · 06-22-2002, 11:00 PM

also you might wanna know that nitrous under boost is almost double than without, keep that in mind.. dont know if anyone said that

laughin2.2 · 06-23-2002, 02:45 AM

I've heard that, but i can't think of any physics or chemistry to back it up with. We'll be installing an NOS dry kit on a boosted LS this week though, so we'll see what happens on the dyno.

2GYellowP · 06-23-2002, 10:48 AM

Edited by Laughin: 2GYellowP you have a PM.

xtal · 06-24-2002, 05:04 PM

Get a kit to spray the NOS through the intercooler, or use CO2 for the same thing. Lower IAT + compressed air == zoom zoom.

Steve

laughin2.2 · 06-24-2002, 08:22 PM

xtal's talking about NX's Ntercooler kit, I think.

xtal · 06-24-2002, 11:41 PM

Yep.. that's the one, or you can jury-rig one yourself. If you lower your IAT dramatically under boost you will see great gains and improved detonation resistance. I've seen it used as a temporary measure for blowing off heat soak when under hard racing, too.

Steve

blackomega · 06-28-2002, 05:50 PM

but is a temporary thing right, like you can just use it like nitrous?

it sprays into the intercooler??? makes sense i guess. its not like a water or alcohol injection is it?

laughin2.2, keep us updated about the LS

laughin2.2 · 06-29-2002, 02:37 AM

The nitrous sprays ONTO the intercoole, not into it. It would be like you were racing in antarctica. I see no reason why you couldn't spray a whole bottle in one sitting like this.
The install on the boosted LS is almost complete. Everything is done except for the actual tapping of the intake piping. The owner of the LS doesn't think that he'll be able to keep from spraying on it, so we'll install it the night before he wants to go to the dyno. Hopefully I can get him to go on Tuesday with me, because I already have an appointment for then. The install took 6 hours for everything including and hour of trolling the internet looking for the wiring diagrams for his dry NOS kit, installing the switches, and troubleshooting some minor stuff.
I'll have the old and new dyno sheets up on Tuesday. I just found out that my sister has a scanner in her room.

blackomega · 07-02-2002, 03:09 PM

did you check that beast out yet?

laughin2.2 · 07-02-2002, 11:45 PM

Working on it. The shop Xrated CC goes to wants us to convert it to a wet kit before we put it on the dyno. They think that he may max out the injectors, or get boost creep. I have to get back on the dyno with a full bottle before the 13th so it should be soon, but I'm doing my suspension tongiht and tomorrow. Hopefully we'll have him racing by this weekend.