Figured it out over the weekend! The cam position sensor was the cause
I was referring to the fuel pressure sensor, but since you did a head gasket, did you double triple check your timing?
Alright guys,
I got a 2012 MS3 with full bolt ons. Lately it has quit starting due to low fuel pressure. I swapped hpfp's, the relief valve, and the sensor. I was reading correct pressures between 51-70 psi with the key on and engine off so I know my in tank fuel pump is good. Car is not...
I just made the switch to an E85/93 pump mix tune a couple weeks ago. My car is tuned by Will at PD Tuning so I have both a pump tune and a mix tune. Here is what ive seen so far:
Pros:
Moar go fasts!
Only mod required is HPFP internal upgrade
I'm pushing somewhere close to 300 whp/330tq...