fuel pressure setting
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 949
Likes: 0
From: smithtown ny
fuel pressure setting
hi, i have a 1991 vette the mods are, tpis long tube headers,52mm throttle body,ported plenum,ported edlerbrock runners, vortex air cleaner,msd coil,tailpipe eliminators, now i just read a article on this sight that said it was not good to take the vacuum line off, tpis told me to take off the line then adjust it what should it be set at for my mods with the vacuum line on thanks
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Re: fuel pressure setting (6spd)
If your fuel system is in good shape the stock pressure range should be enough. If you have an AFPR you could always try it at stock range and adjust upwards iun small increments as track times or seat of your pants indicate. Stock range for your '91 is 34 - 39psi @ idle.
Drifting
Joined: May 2003
Posts: 1,979
Likes: 48
From: Lakeport CA
Re: fuel pressure setting (6spd)
You set it with the line off in order to get a valid "top" pressure. Then connect the line so that it adjusts the pressure as needed according to engine vacume. The thread was talking about folks who might have disconnected the vacume line & LEFT IT OFF all the time. Which is NOT a good thing.
Make sense?
Make sense?
