Ok. Well I gotta get my fuel pressure down from what the walbro pump has bumped it up to. What is the stock fuel pressure on a d16y7 with the vac line connected?

 

i THINK its 30-40 psi

 

Yeah has to be somewhere in there. Anyone have exact info?

 

y would u want to turn it down?? stock psi is 40.

 

stock pressure's vary depending on closed throttle or not closed throttle.

With the engine running at idle you want the pressure to be around 30psi. then disconnect the FPR Vac hose and re-check the pressure, it should be up around 40psi.

If you set the idle w/ vaccumm to around 30psi the non vac idle should adjust itself to 40 as soon as you remove the vac hose.