What is the fuel pressure for the 90's GM TBI in-tank pump modules? I'm looking for 45-55 psi.
GM TBI fuel pressure
- Thread starter BBShark
- Start date
JeffP1167
Well-known member
You need a TPI pump to make that.
mrvette
Phantom of the Opera
I have never personally measured a TBI, but have read many times, it's 10 psi.....or so...
DPFI is in the 40 region, IF I block the return hose my pump will go to 60 psi...regulator set at ~40 something 42?
DPFI is in the 40 region, IF I block the return hose my pump will go to 60 psi...regulator set at ~40 something 42?
It appears that the 90's Vortec 5.7L is 40-60 psi.
