Yea I have seen that and the problem was he was spraying wet at too low of an rpm, fuel puddled in the intake and BOOM! Fire! I know my nitrous very well like I said, was spraying 180+ shot direct port on my trans am for over a year. Just wondering about how to dyno because I have never done it. :thumb:undertaker said:a window switch set at 3100 and 6300 would solve the rev limiter problem. NEVER spray below 3000 rpms, engine ain't movin, I'm gonna guess you've seen the video of the yellow 01 that sprayed at too low of an rpm.
I agree. On the street you have no business spraying at 3K RPMS in 4th gear.WA 2 FST said:Chances are very good that your peak HP will be made ~6000rpm, so even without a window switch, there is no reason (for HP/TQ #s purposes) to take it over 6000-6100rpm.
I have dyno'd several cars on spray and I'd recommend since you're lugging it in 4th to wait til 3500rpm on the dyno. On the street you'll never hit it at 3000rpm in 4th... you'd downshift and nail it in 3rd and once you upshift into 4th you'll be over 4k rpm anyway.
You'd probably be fine spraying at 3000 on the dyno in 4th, but that's still a lot of load on the motor and its not accelerating _that_ fast in 4th gear.