Car is an 03 Cobra KB2.8LC with full bolt ons, stock shortblock, stock cams/heads. Makes 24lbs on E85. Just put a fresh tank of E85 and Plugs are BR7EF gapped to .020. I have the full Lethal 1400rwhp return fuel system with 80lb injectors.
Finally got the chance for my friend to log my car with a snap on veras and under boost it's fuel pressure is 47psi while normal driving but under throttle/building boost it dropped to 0 or low single digits and the car would miss hard, start popping etc.. I have the lethal 1400rwhp return setup with twin 465's, -Aeromotive 4 Port Pro Series EFI Fuel Pressure Regulator. Car still runs smooth driving around town, no idle problems, no problem starting the car cold/hot..Another friend mentioned a fuse on each fuel pump
Question is would a bad regulator cause this? Vacuum line maybe, Are one of my pumps gone?
Any fuel system experts help me out. Thanks in advance and yes I've searched the forum.
Finally got the chance for my friend to log my car with a snap on veras and under boost it's fuel pressure is 47psi while normal driving but under throttle/building boost it dropped to 0 or low single digits and the car would miss hard, start popping etc.. I have the lethal 1400rwhp return setup with twin 465's, -Aeromotive 4 Port Pro Series EFI Fuel Pressure Regulator. Car still runs smooth driving around town, no idle problems, no problem starting the car cold/hot..Another friend mentioned a fuse on each fuel pump
Question is would a bad regulator cause this? Vacuum line maybe, Are one of my pumps gone?
Any fuel system experts help me out. Thanks in advance and yes I've searched the forum.