Reads 40psi @ idle 51 @ WOT Is that safe enough, 8psi pulley, 42lb inj. Only seen about 6psi of boost according to gauge.

 

Seems like its working. I'm assuming you have a boost referenced fuel regulator? Hard to know for sure. You really need a wideband reading to know for sure. You can take a plug reading, but thats kind of a pain cause you need to make a WOT run and shut off immediatly then pull some plugs and take a look. If you have a way to scan it (datamaster or freescan) then you can get a half *** idea by looking at the O2 readings. I've found in my experience that readings in the .950mv range usually show around 11.5:1 on my wideband.

Ken R.

 

Hello, I have stock pump with the supplied procharger fuel booster. Im thinking about wideband but is it really necessary with the fuel gauge?? Some say yes some say no.

 

fuel gauge and WB have nothing to do with each other. The fuel gauge is telling you how much fuel pressure is in the rail.

Your A/F is determined by how fuel pressure is at the back of the injector and how long the injector sprays for. You can control your A/F by playing with the time the injector stays open. By varying this time, you change your A/F ratio... so the fuel pressure gauge isnt going to help you dial in your A/F. It will tell you if you are having a fuel delivery issue though.