Compression Ignition Addict
Join Date: Oct 2011
Location: Chico, California
Thanked 254 Times in 245 Posts
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most people are still running the original Fuel pressure relief. the thing wears out in 100k miles and who knows what fuel pressure is unless you have a fp gauge. the brass poppet gets worn out, and the orings are shot.
not to mention some folks (my dad) never change their fuel filter
but your hpop could be having trouble keeping up as well.
php tunes are programmed to not defuel, they still set the light for overboost though.
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99.5 f250 7.3 4x4 265k Full Force 160/30, PHP Hydra, S&B CAI, 4" Exhaust, Van Turbo, RR 6/6 Billet Wheel, Autometer Gauges, Transgo Tugger, Non-Ebpv Pedestal, 08 Tow Mirrors, Trucool Max.
Dad-2000 F250 7.3 4x4 114k Autometer Gauges, Superchips 1705 (Tow Safe), Blue 6637, 4" Exhaust, BD Billet Wheel, Trucool Max.