So if the stock fuel pressure is 55psi on a 2003 spec ecotec, what is the WOT fuel pressure? say its around 65psi, whats the max PSi the stock fuel pump can put out?
If the stock pump can take more pressure bump up the base pressure and keep backing down the injector constant, the higher the fuel pressure the better the atomization right?
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
says there that stock fuel pump puts out 80PSI
http://www.j-body.org/forums/read.php?f=40&i=112602&t=112593#112602
|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|
but what does it do stock? at WOT
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
from my underdstanding the fuel pump puts out 80PSI all the time... now the regulator is what changes based on pressure (vaccum/boost) ... correct me if im wrong people
what it goes to exactly (stock) im not sure
you can get a fuel pressure gauge hooked up and see
|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|
the pressure reg is what dictates actual running pressure , pump is 80 psi max
higher fuel pressures will drop pump life
my 2.4 i droped my fuel pressure to 30 psi from 50psi , have had no problems from the lower pressure
hmm i cant seem to get my digital fuel pressure gauge to say anything but LO
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
