Another stage 3 fuel component/specification thread
Ok first off my mods:
Stage 3 fuel pump/rail/PCM
I've ran this setup now for about 3 years without problem untill now. I'm having issues under WOT and full boost. My power completely breaks up. Also i've developed an extended crank after sitting for a few hours. I re-gapped my plugs and replaced my plug wires with a spare set that I keep in my trunk. Problem still there of course. Naturally I check fuel pressure, at idle it's 45psi with vacuum applied to the rail regulator and without vacuum it's still 45psi. Judging by this I would say the regulator is bad due to no change in pressure. But from what I understand rail pressure on a stage 3 should be at 52psi and without vacuum 58psi, is this correct? If so this combined with the dropping fuel pressure while sitting would lead me to believe that the in tank regulator may be on its last legs. My question is can this be bought seperatly from the entire module? I searched and found a thread that's a few years old talking about a possible group by from the manufacturer but other than that I don't know. I really would like to keep the stage 3 components rather than get back into buying/tuning other parts again.