not good to run over 1100 psi. the nitrous oxide looses its liquidity at this point and leans out your air fuel ratio. also nitrous makes more power in a liquid state. i have found that anywhere from 1000-1067 psi works best 4 me. 900 psi is running way 2 close 2 border line rich but then it depends on how rich or lean your motor is in a normally aspirated state before u spray.
I run quite rich before spray and have propane as a secondary fuel with the spray so I go for the biggest psi I can feel comfortable with. Do I understand you to say that 1200 psi isn't going to get as much power as 1000-1067? I set for very rich and ran 1350 psi today. Feels like a JATO rocket. Every 100 psi I add seems to add a ton of power. I know I am flirting with disaster...if I stop posting here, you can assume something didn't go well! Just kidding, I check everything a million times like a airline pilot and test and check everything often when I am playing with different thermostats. But today was hot and I had left my trunk open in the sun and the pressure was insane...and so was the power. I'll probably end up using a 36 Celsius (95 F) for regular use but I'm tempted to use the 38 (102 F) I have on now for special days!
Sorry, I'm not trying to steal this post, the point was that Nitrous can deliver widely varying amounts of power and I would be concerned about racing a car as powerful as a Vette with Nitrous...of course I'd be more concerned with a Viper with Nitrous!
