I've had the GenII kit installed for several months now. I'm on my third bottle and I think something's wrong. I'm running a 150 shot, but I don't feel like I getting as much power as I should.

I have the RPM window switch set to spray at WOT from 3-6K. I can feel the nitrous kick in, but I don't notice any neck-snapping acceleration, or wheel spin, or other indications that I'm spraying 150 HP. My GN, albeit an automatic, chirps the tires with the 1-2 and 2-3 shift under WOT at both normal and highway speeds.

WTF. I don't get it. Does anyone running this setup feel the same way, or is something awry? Is the car just that deceptively fast that I don't notice it? Will I need to go to the track to see the difference? I mean, I installed the kit thinking that I was going to have to watch myself, but I can flip the switch in 2nd gear, slam open the throttle, feel the boost once the spray kicks in, but never worry about breaking the rear-end loose (of course, 1st gear is a different story).

Any input from other users would be appreciated. Thanks.

 

Assuming everything else it OK Bottle Pressure, NO2 Filter, Solinoids ect.. and you didn't back off any timing I would check your spark plugs... When running NO2 you should run a smaller plug gap and a few degress less timing to be safe imho.

Dennis

 

You will definitely know if you are getting 150 more HP. Are you low on NOS? The bottle does go fast you know. 5 to 8 races will empty out that bottle fast @ 150 shot.
Clogged lines?... < if you used teflon tape, it can clog the lines easy >
You should be in the low low 12's at least.
Whats up there? What is your ET?
:confused:

 

I don´t have wheelspin on any shift with my 150hp shot.
And I also think I´m slower each time I race.

That´s because you get used to it.
You always wanna get faster and faster.

Do a race at the track and you will know.

On my first 150hp run I was totally impresse of the NOS punch.
Now I always think my bottle is empty.
That´s when doing 11,6 or lower ETs.

NEVERENUFF!!!

Only look at the bottle pressure and if you have full bottle.
1st shot from a fresh bottle is much more powerful than
the 2nd and 3rd. Don´t mention with a half full or nearly empty bottle.
I sometimes think I go without NOS then.
Thats why I have bought a 2nd bottle now and always run with a perfectly full bottle where the NOS comes out like liquid!!!! :D

Michael

 

Ran my first 150 shot at the drags last nite. I was really worried about control of car also. I went from 3000 window switch engage to 3400 to be on the safe side. Well I was watching the rpms in first gear and when I hit 3400 :eek: . Talk about a kit in the rear. You should DEFINATELY feel when the 150 hits. Jeff

 

ajrls i got a question
do you know which wire is your window switch hooked up to on your computer
and what brand
I cant find anyone with 2001 info
thanks

 

When I used it last week (100 shot) I felt it kick in, then it didnt impress me much. I havent used it much, I'm on my second bottle with my system. When I crossed the 1/4 mile mark I was doing around 120mph so I know it was kicking in.. :eek:

Chan

 

OSR 1 Hook into the #10 white wire at the PCM. Let me know if you need any other help. Cut both wires on the MSD switch if thats what you are using (4cylinder). Jeff

 

Dennis-

The bottle pressure is running around 900-1000 (in the green zone). I'm not sure if my bottle heater is working right now because I felt the bottle the other day, and it felt warm, but not hot. I switched the plugs to NGK TR6's with recommended gaps when we did the install. The installation was done by a friend who is a professional and has installed many similar kits.

Bruce-

The bottle is full (I just filled it up last week). We used teflon paste when we installed, not tape. I haven't been to the track recently, so I can't compare numbers with and without spray. What I'm talking about is merely a subjective lack of oomph.

Michael-

Thanks for the thoughts. I think you may be right, but I'm not sure. Since I bought the car new, I have been less than impressed with the visceral sensation of speed and power. I mean, the gauges say one thing, but my brain isn't like "holy crap, hang on!!" that's what I mean when I say "deceptively fast" - sure, we're doing 165, but it sure doesn't feel like it. I don't know, maybe I've been spoiled over the years, and it takes more to trick my brain into thinking I have "enough power." ;)

Jeff-

I agree. I feel like I should definitely feel it, but I don't. I can feel when the nitrous kicks in, but the car doesn't break the rear-end or anything. Maybe I'm expecting too much. Maybe the movies have spoiled me into thinking that when I hit the spray, helicopters will suddenly disappear!
Maybe it's time to break out the Tech II and see how the computer's running.

Thanks for your thoughts, everyone.


[Modified by 99HRDTP, 8:26 PM 9/9/2001]

 

Any other seasoned nitrous veterans with an idea?

 

Ruling out the obvious stuff, I read a few of your other post regarding NO2. Did you check the plugs and filter? Also are you installing the bottle with the siphon tube down. Also check the grounding on your noids.. If the the noids open and fuel and NO2 flow without any restrictions then you need to look at your mechanical systems.. Good luck, keep us posted!!

Dennis :blueangel:

 

99HRDTP,

Here's a couple of other items/questions:

1) FPSS: Do you have one? If so, I've gone through three of these in the last year and a half and every one of them has needed adjustment. Might be worth a look. I would imagine with the 150shot on the 99 that you may be dropping a bit of pressure which may shut you down...

2) Have you had the chance to ATAP during any of your runs? Maybe worth a look to see whats going on...


I'm sure there's a bunch of areas left to check - I'm just drawing a blank right now...

FRPTech

 

i have been racing hard all spring and summer long with my NX kit. i've gone through (no joke) about 30+ bottles (15# bottle, too!) some pointers:
1. ensure that the nitrous solenoid filter element that you received and installed in front of the solenoid is devoid of debris. i have pulled mine apart and cleaned a bunch of junk out of it 2x this summer. so, clean it about every 15-20 bottles, you may not get junk every time.
2. operate your bottle pressure around 1200-1400psi. that's right, in the RED. the hardware is set up to operate in this range very comfortably. the higher the pressure, the better the spray and atomization of N2O/fuel coming out of nozzle. 900psi is limp compared to 1400psi. you'll see what i mean.
3. i dont mean to insult you, but do you have your jets in the Shark nozzle correctly?? for 150 hp you should have the #62 in the blue (nitrous) line and the #33 in the red (fuel) line. having these backwards will produce thesymptoms you speak of.
4. you may not be getting proper fuel pressure period. maybe your vehicle fuel filter is getting clogged, or your pressure itself is limp due to weak fuel pump. look into it if all else checks out by checking fuel pressure at the fuel rail with a pressure gauge where you have the NX fuel line tied into.
well, without being able to look you car over, i couldnt be much more help. with the 150 jets in, you should definitely feel it kick hard once your window switch kicks in. it may not always break the tires loose, but you should sink deep into seat. also, be sure to have at least the 3400rpm pill for your ON window, if not higher. bringing that much on any earlier will test the limits of the onboard sensors that will yield sorry results, pinging, and general dissappointment. i have my window come on at 3600 with the 150's and at 4000 with the 225's (i made 225hp jets by drilling my #18 with a 1/16" precision jewelers drill bit for the Nitrous jet and use the #38 supplied in the kit for the Fuel jet- works absolutely awesome!!! but goes through the nitrous like crazy!! it is only for special occasions when racing!!). hope this helps.