What fuel pressure do you guys with the stock fuel pump get with a .042" bypass jet?

I never installed it with the stock pump...and I know I got way too much with my walbro.

 

Are you talking about on the juice or off? With a stock pump, my fuel pressure didn't change from stock, except when I was spraying. With the Walbarro, I was running 3-5 psi too high, until I installed an aftermarket FPR. Hope this helps.

 

Sorry, I mean while spraying.

 

Hmm, if I remember right, it was around 60 psi.

 

Thank you.

 

I just took my car up to redline in 3rd gear NA and my fuel pressure didnt go over 40psi, should I be scared to run my 50 or 75 shot from the NX kit on it?

 

I have a list of PSIs on both a stock pump and Walbro for .042, .036, and .034 jets if you want it.
-hype

 

What I am saying is, is it okay/safe to spary a 75 shot from my wet kit at fuel pressure of 40psi at wot.?

 

Probably not. The spec for stock fuel pressure is 43psi at WOT, so even though you're only low 3 psi thats almost 10%.
-hype

 

Guess I will get a walbro fuel pump instead of the catback I wanted. I want to get the 190 one but I do not know if I need the High Pressure one or not. Can someone give me the part number for it.

 

Can I get that list?