When to spray??? (N20 at the track)

[CaliBolt]

I havent been to the racetrack in a while and we plan to head to sacramento raceway january 12th (try to come if anyone can make it!) for a little tuning fun, and I need a little advice on when to spray my n20.

My main mods:
6lb lower, psp cai, lakewood slappers (w/ DS loop), 28x10 slicks, 75 shot n20, and a few small things all held together by a tune by sal at PSP.

Last time I raced I had DR's and tried spraying off the line and couldnt hook very well. So with these slicks if I spray off the line what should i be launching at, a small preload or at idle?

Also, any nitrous/track advice would be appreciated, thanks! epper:


Marc

 

[ecoastkid]

I'm guessing you will be able to spray off the line with the slicks. I found that in my truck (with a stock stall, 4#, and a 75 shot) it was best to launch off idle. Test a few different ways and you will soon know.

 

[Tazman1]

Heat those Slicks up, like a JOHN FORCE Burnout....
Try different tire pressures too.
Buy some adjustable rear shocks...

 

[gpro71bird]

I havent been to the racetrack in a while and we plan to head to sacramento raceway january 12th (try to come if anyone can make it!) for a little tuning fun, and I need a little advice on when to spray my n20.

My main mods:
6lb lower, psp cai, lakewood slappers (w/ DS loop), 28x10 slicks, 75 shot n20, and a few small things all held together by a tune by sal at PSP.

Last time I raced I had DR's and tried spraying off the line and couldnt hook very well. So with these slicks if I spray off the line what should i be launching at, a small preload or at idle?

Also, any nitrous/track advice would be appreciated, thanks! epper:


Marc

I'll try and make it out to Sac on the 12th. Test & Tune days are a great way to try different set ups and launches.

George

 

[smilinjack]

I wouldn't spray until after the launch. That is a huge tax on your drivetrain for just a small gain. I spray on the shift to 2nd gear. You can also use a delay timer (time or RPM) to soften the blow to the trans, shaft, rear end, etc.

 

[Charlie41]

Use RPM's to activate the N02. For reasons stated above, I would set it @3k RPM's. Plus, almost every Dyno, N02 explosion I have seen was below 3k RPM's

Good luck
Charlie

 

[jwiles6186]

My buddy on his 06 GT would only spray once he launched and had hooked. If he did it off the line he would spin all the way through 2nd I believe.

 

[Blk04L]

Use RPM's to activate the N02. For reasons stated above, I would set it @3k RPM's. Plus, almost every Dyno, N02 explosion I have seen was below 3k RPM's

Good luck
Charlie

+1 on the Rpm switch.

 

[ecoastkid]

Use RPM's to activate the N02. For reasons stated above, I would set it @3k RPM's. Plus, almost every Dyno, N02 explosion I have seen was below 3k RPM's

Good luck
Charlie

Ordinarily I would agree with this, but since its only a 75 shot, I wouldnt worry about all that. Once your over 125 or so, I would be more starting to worry about the electronics.