fuel pressure when i spray

when ever i spray my car the fp goes up all the way my guage goes up to 100 and it pegs it is this normal i heard it was only supposed to go to 80

? noone

i dont thinl thats normal......mine goes down when i spray.....maybe its an lt1 thing but i dont think so

He's running the NOS 5176 dry kit - it is LT1 specific. That kit bumps the fuel pressure up when you spray, to add the extra fuel through the stock injectors.

The 5176 kit should give you about 85-90psi. Never saw mine go to 100psi. What pumps are you running? Do you have a "jet" in the vacuum line?

i have the stock nos pump and no im not running a jet in the vacuum line im guessing thats why

I had the NOS pump inline, and no jet in the vacuum line. I think the jet goes into the manifold side of the tee, and the smaller you make it, the higher the pressure against the FPR = higher fuel pressure. (not positive about that though). Without the jet, you essentially have what they originally sold as a 125HP non-adjustable kit.

Can't tell you why you are getting such high fuel pressure. Have you looked at the plugs after you spray? Are they black enough to indicate you are running excessively rich?

well i had an extra jet that i put in the vacuum line and it now has my fp at about 75 in second but in 4th it goes to about 95