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Hey everyone I am getting three codes on my AP but the car is running fine no missfires or running rough I've cleared the codes and they come back again. Any ideas where I should start? I have small mods like Cobb intake, HKS BOV, HPFP internals and COBB off shelf tune. Thank you.

I was changing my hpfp when I took it out it was covered in oil. How bad is this what can I do?

Hi everyone I was looking to buy auto tech hpfp internals but figured I’d check if my car already has some, this is a picture of my hpfp. Can anyone tell if I have aftermarket internals or stock? Thanks in advance.

Just bought a 2009 Speed3, it turned on check engine light on code is P0304 for misfire on cylinder 4 the car stutters at higher rpms above 3000 any idea where I should start? I’m a newbie :(