I posted this at SVTP as well, but thought I'd see if the pros here have any idea too.
So my Mach keeps popping the fuel rail pressure sensor every few days after my latest upgrades. It's got a Cobra short block and is Procharged, with an 03/04 Cobra tank swap + KB BAP (40 amp) and 60# injectors. Making 486 rwhp right now, can't seem to get any more out of the P1SC.
The most recent upgrades I'm talking about specifically include smaller blower pulley, larger crank pulley, and an alternator underdrive pulley to keep that from overspinning.
The strangest part is that it only pops the sensor at idle... it happened once as I shut the car off, and the second time it happened 2 seconds after I started it.
This is driving me nuts.