murdock.dean

iTrader: (14)

I have a 99 z28 auto that is bone stock besides a catback. I put a Nitrous plate kit on it, Jetted for 150 with a HSW interface controller. I put in TR6's for plugs and sprayed the car for the first time last night and it was breaking up. Almost acting like it was aiming and disarming quickly. No backfire just cutting up, anyone with lots of nitrous experience help point me in the right direction, thanks

armyboyatc

iTrader: (29)

First you need to ditch the TR6 plugs and put some BR7EF plugs in it.

How much timing did you pull?

Have u pulled the plugs to look at them?

I would post up pics of ur plugs after a 1/4 mile pass and we can point u in the right direction.

murdock.dean

iTrader: (14)

I have the Interface set to pull 6* on top end and adding 2% more fuel so that it not leaning out. I will be taking the car to the track this coming sunday for more testing. I'll do a pass then pull the plugs and take pics. Thanks for the response.

zracer323

iTrader: (12)

I would pull the plugs before you spray it again. Make sure that the breaking up you were feeling wasn't detonation. They should come out anyway to put some be7ef's in there which is the proper plug for a nitrous setup.

w3s1c0a5t

iTrader: (3)

Has the car been tuned or are you pulling 6 degree's from stock?

How do you know +2% fuel is enough? Do not spray it again on those plugs. Change to some br7ef's at the track and get a baseline.

dannyz

Assuming the timing was was -6, and your fuel was correct, I am thinking that your plug gap may have been too much, and the nitrous was blowing out the spark.
Ditch the TR6's, put in br7ef's, drop down to a 100 shot and run it.
What other mod's do you have?
Even bone stock, running a 150 rwhp shot is pushing your stock fuel pump right to the edge of the "safe" limit.
Take a step back, call the guy's at nitrous outlet and get some experienced input on where to go from here.

Fbodyjunkie06

iTrader: (10)

Good advice.

The gap on a TR6 out the box is huge and most likely the reason you were breaking up.

But a BR7 in it, verify the gap is .035 and try it again.

murdock.dean

iTrader: (14)

Pulling 6* from stock timing and im running a wet plate kit so just adding the 2% fuel to be "safe". I havent drilled my stock exhaust yet to but a wide band in so dont know A/F for sure.

Dynospeed

iTrader: (3)

What pills are you running? Im thinking your overly rich and also blowing the spark out. Have you sprayed a smaller shot with good results?

Fbodyjunkie06

iTrader: (10)

The recommended jets are always way to rich, and you're adding fuel on top of that through the injectors.

Bro, you're super rich.

Take the 2% out, and jet down the fuel the next size jet you have. Rich is far from safe.

When you say stock timing as the tune ever been altered? It's been so long since I have seen a stock tune what is stock timing? 27*? 26*?

87silverbullet

iTrader: (11)

I don't think its even that much. I've ran 100 shots with no timing pulled on stock tunes.

OP, DON'T DO WHAT I DID! Always check your plugs and make sure your timing is where it needs to be.

Neal@NitrousOutlet

Just to reiterate some things that posters have said.

The TR6 if not gapped down can be a little wide for 150 shot. It could be blowing spark out. Definitely get those changed out to some BR7 gapped around 32.

Adding 2% fuel globally is most likely making you extremely rich when spraying.

Also stock fuel pump is good for 450ish whp. So if you are on stock fuel pump them most likely you are going to be on the edge of its duty cycle.

Do you have a fuel pressure safety switch?? if you do, the FPSS could be seeing that low pressure and grounding out the solenoids if the fuel pressure is dropping enough.

If you want help feel free to call us up or PM Chris, Dave or I.

murdock.dean

iTrader: (14)

Thanks guys, I order the BR7's took the 2% out and only pullin 2* of timing. Waitin on the plugs then goin to try it and see how thigns go. For jets Im runnin 62 for nitrous and 38 for fuel.

J Money

iTrader: (6)

so the br7's are a better plug than the tr6's I just installed a nitrous outlet wet plate kit with a 150 in my cam only ls1 would that be best for my setup

JRracing

iTrader: (35)

I honestly think you should have started with 50 or 100 jet to get the hang of it before diving into 150 shot.
If things are way of on a 50 shot you might not hurt anything, if it is way off on a 150 you might be building a new motor sooner than you thought.
I blew a motor up on a 150 shot. Lifted a ring land and cracked the cylinder wall. That motor was a stock bottom end pushing 571rwhp on a 100 shot. It was on barrowed time anyways lol.

murdock.dean

iTrader: (14)

This is the second LS1 car i have had with nitrous on it so figured i would start where i left off but wasnt thinkin when i put the TR6's in. But it is the first time I have used the HSW interface.

J Money

iTrader: (6)

u dont think it was the high horse power on the stock bottom that landed you rebuilding and not the nitrous im pushing around 380 n/a that should put me around 5 on the bottle

J Money

iTrader: (6)

runnin tr6's what should i gap em at

murdock.dean

iTrader: (14)

Didnt blow the motor this is a total different car, my last one was a 98 z28 this is a 99 z28. old motor was full bolt ons and tuned to 380 wheel and plus the 150 ran for 2 summer and then went to a turbo setup.

Fbodyjunkie06

iTrader: (10)

Always. At 150hp on stock compression a BR7 is what I would recommend.

At anything above that 200ish a B8EFS is what I always use and anyone else that frequents these boards.

Anything more than 250 I would seriously consider a B9EFS.