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The Terminator
Engine/Tuning
KB E85 Cobra fuel issue breaking up. Return system
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<blockquote data-quote="FastNick01" data-source="post: 15605933" data-attributes="member: 78237"><p>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.</p><p></p><p>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</p><p></p><p>Question is would a bad regulator cause this? Vacuum line maybe, Are one of my pumps gone?</p><p></p><p>Any fuel system experts help me out. Thanks in advance and yes I've searched the forum.</p></blockquote><p></p>
[QUOTE="FastNick01, post: 15605933, member: 78237"] 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. [/QUOTE]
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KB E85 Cobra fuel issue breaking up. Return system
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