Maybe Time To Up Nitrous Shot?

[factoryfreak v6 firebird]

so i have a zex ls1 wet kit on my firebird.. i was thinking about maybe going to 125 but need to know what i put on else to make sure i dont mess my engine up. i have a a4. i will be getting a bigger fuel pump,alum driveshaft,and maybe msd dis 4 to retard the timing. So i was wondering if i need anything else? also i was wondering how much more is the 125 going to help than the 75 because with my current mods listed below i beat a 05 manual s2000 and that car is good for low 14's so i have to be around there. also i want to include i would like to run mid 13's so what else is needed if any to do that. thanks.

mods are...
gu6 code so stock 3.42 gears with no lsd, transgo shift kit, msd spark plug wires, tr6 irdium spark plugs, custom intake,ram air, no cat, flowmaster exhaust, zex 75 shot wet, purge kit

[97rs4life]

Re: Maybe Time To Up Nitrous Shot?

fuel pump and retarding the timing are the main things. You really should get hp tuners and get that thing tuned correctly.

with a 75 shot, yea low 14s are a pretty good guess.

KR is what kills these engines the most, so having it tuned correctly will help that size shot

[factoryfreak v6 firebird]

Re: Maybe Time To Up Nitrous Shot?

if i get hptuners can i do that myself i have a labtop and everything or should i get a mechanic to?

[97rs4life]

Re: Maybe Time To Up Nitrous Shot?

you can do it yourself with a laptop.

There are many tuning guides and a lot of knowledgeable people to help you out with using it. With some patience you can really help your car out performance wise and such

[factoryfreak v6 firebird]

Re: Maybe Time To Up Nitrous Shot?

u think with a 125, alum ds, i dont know if i need msd dis 4 if i have hp tuners but i should get around a 13.5 with good traction right.

[97rs4life]

Re: Maybe Time To Up Nitrous Shot?

you wouldn't need the dis 4 if you went with hp tuners.

125 shot with a good tune and suspension to put the power to the ground should get 13.5, however track location, weather, car, tune, all play vital roles in your final time.

I ran 14.4 on a horrible tune that was seeing a ton of KR on a 75 shot.

[factoryfreak v6 firebird]

Re: Maybe Time To Up Nitrous Shot?

would be going to 245/50 nitto dr so i can use the nitrous right of the line :banana: . i like the mickey thompson dr. had them before, but i want to have the same size tire all around the whole car though.

[97rs4life]

Re: Maybe Time To Up Nitrous Shot?

the MT's are known to hook better than the nittos.

when you say "spray right off the line" I hope you mean over 3k rpms and at WOT right?

[Shodown]

Re: Maybe Time To Up Nitrous Shot?

If you have DR's and a good tune you should get better than 13.5 on a 125 shot I would imagine, but there are a lot of factors in drag racing. Just remember, just because you beat a car once that is capable of 14's, doesnt mean that you will run that ;)

As said before, KR will kill your ET and its not good for the motor either. I definately wouldnt bump up the shot until you got a tune.

You might also want to think about getting LSD too, that will greatly decrease your 60' times thus decrease your ET.

[factoryfreak v6 firebird]

Re: Maybe Time To Up Nitrous Shot?

about 2500-3000 i have went through about atleast 10 bottles no lie in the past 3-4 weeks with a 75 wet. i went through one of there tanks which is about 7 refills before everyone else went through one of there tank refills (modified motorsports). had my car inspected by modified motorsports and the owner has done plenty of nitrous installs and runs like it never had nitrous. i now safety precautions and all but with the dr and nitrous and u know ur not going to spin the tires so its a habit. plus if the fuel pressure gets to low it shuts the nitrous off anyways so im not really worried about it back firing... he just told me once i go over 75 i need to retard the timing and get a bigger fuel pump.

[97rs4life]

Re: Maybe Time To Up Nitrous Shot?

I would stop spraying under 3k rpms if I were you, you are playing with danger. You don't want a nitrous backfire due to puddling in the intake because your rpms were not high enough

[factoryfreak v6 firebird]

Re: Maybe Time To Up Nitrous Shot?

see i was debating that shodown.. whether or not to get 4.10 gears and lsd or upgrade the nitrous. what do u think would help more? most of the time i go to the local 1/8 mile track or race for a stop so i figure if i get traction with some dr's 4.10 and lsd would greatly decrease my 60'.

[factoryfreak v6 firebird]

Re: Maybe Time To Up Nitrous Shot?

i have checked on that and monitored it very carefully no puddling thus far but will start using nitrous at 3k or above. thanks guys

[Shodown]

Re: Maybe Time To Up Nitrous Shot?

plus if the fuel pressure gets to low it shuts the nitrous off anyways so im not really worried about it back firing.

You can still backfire even with an FPSS, just ask me how I know :o

The FPSS only protects you from running lean, you could still puddle fuel in the intake manifold and backfire. I HIGHLY suggest a window switch if you dont have one.

[Shodown]

Re: Maybe Time To Up Nitrous Shot?

see i was debating that shodown.. whether or not to get 4.10 gears and lsd or upgrade the nitrous. what do u think would help more? most of the time i go to the local 1/8 mile track or race for a stop so i figure if i get traction with some dr's 4.10 and lsd would greatly decrease my 60'.

If you dont mind getting a little lower mpg on the highway, I'd go with LSD and 4.10's. Less chance of f'ing something up AND you will run better ET's. :)