Hi all, I just got my car out for the first time this year and my fuel pressure is dropping from 40psi down to 30 and below when I step on the pedal. It went away fine do I'm at a bit of a loss. I have stock pumps with a bap, wire upgrade and pprv delete. I've searched but can't really find anything similar so I'm not sure if it's a bad pump or what else it could be. Any suggestions appreciated.
Fuel pressure drop
- Thread starter tonga3
- Start date
Just as an update I datalogged it this morning and found that pretty much anything off idle maxed out the fpdc. I'm wondering if one of the lines popped off from when I did the pprv delete? Maybe it's time for a return system. Any thoughts?
Either a bad pump or a line. Either way you need to drop the tank and inspect. I had a GT pump go bad on an old car. It would still run fine but I'd see 100% duty cycle for a short time at peak tq.
I just had the same issue. It was some thing with my BAP
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