You say you've gone through 4 sets of plugs this year and still have a misfire? Have you considered checking your spark plug coils to see if that's actually the issue? That would be my next step, and are you still running a Forge bov? From what I understand there are different springs you can buy, maybe you need one rated at a lower psi. I'm just throwing suggestions out there, hope you get everything solved
yeah, we went thru plugs due to a overheating issue so rather replace the one fouled plug, i replaced all 4, now the misfire isn't coming back now. So tonight i took the BOV off again, yes the forge one, with yellow spring, and noticed the piston didn't release when i unscrewed the end, so i pulled it out and it looks dry, yet greased if that makes sense, weird, maybe i didn't use the right grease the other day when i did it? So i put it back together, this time i didn't screw the end on all the way either, got it little tight, left a few threads and went for a drive, did a bunch of passes back and forth no problem, no pending code, so headed home, 3.8 pulled up and got on it so f it, i did too, after that, code is back pending now, back to 5psi.... I'm totally lost.... almost tempted to put the vaccuum back the way it was oem since we never had the issue before and go from there, I'm torn to think ECU, or BOV, cause this didn't start happening until the other day when i pulled the ECU fuse to "relearn" the car with the new mods... but Jay from SFR says it's not the ECU...