NOS Question

[Wicked8o8]

Ive searched the forums and I still cant find the answer... Is the fuel pressure switch something to invest in? Some say no cause you are only using a small shot of N20. (50 shot for GTS) Some say you need it to prevent running lean.. If you do, do you set it to activate at factory fuel pressure (40 psi I believe) or leave it at the factory setting. (35 psi) Any help would be appreciated. Sorry its so long

[celicauk]

Not sure on the pressure switch but the fuel rail has variable pressure on it can't remeber the range but its pretty wide. I used a fuel pressure regulator to get a constant 10psi from the fuel rail, this allowed the jets to be more reliably matched. As the regulator was variable I could also set the pressure higher to allow more nitrous to be used, the only proviso being I didn't exceed the lowest pressure on the rail, about 35psi I think.

[larryd]

a fuel pressure solenoid isnt a bad idea but its not really necesary.. so long as you have other precautions like the wide open throttle switch