PerceivedShift
Autocross Champion
- Location
- Virginia
In the second revision of my Vortex standard tune on 93. Car logs looks great so far:
Datazap link
With the exception that under high load and RPM I seem to consistently get an EPC light and the engine goes into limp mode of sorts with no engine light. Cycle the key and all is normal. So long as I stay under 6k or so car runs strong! The base tune which pushed 25psi never gave me an EPC light. In this revision I am pushing 30-31 PSI, so quite a bit of difference in boost. Log from EQT base tune.
At first I suspected a fall in fuel rail pressure, EQT informed me that fuel rail pressure looks good. Only code is some unknown code, note the value above static where the code should be is blank:
I may try and pop the EPC light while logging misfires in OBDEleven. Running ruth plugs with only 6k miles on them, they looked great the other day when I pulled them for an intake valve cleaning so I doubt those are the issue. It could be that one of the coils isn't up for the job under the higher cylinder pressures. Thankfully this would be easy to diagnose. I remember reading the stock coils may need replacing at 80k miles...mine have 75k miles on them and I am throwing all this boost at them.
Anyone have anything to add? Oh, I do have an EQT LPFP on the way which will go in when it arrives.
Edit: Log after LPFP
Datazap link
With the exception that under high load and RPM I seem to consistently get an EPC light and the engine goes into limp mode of sorts with no engine light. Cycle the key and all is normal. So long as I stay under 6k or so car runs strong! The base tune which pushed 25psi never gave me an EPC light. In this revision I am pushing 30-31 PSI, so quite a bit of difference in boost. Log from EQT base tune.
At first I suspected a fall in fuel rail pressure, EQT informed me that fuel rail pressure looks good. Only code is some unknown code, note the value above static where the code should be is blank:
I may try and pop the EPC light while logging misfires in OBDEleven. Running ruth plugs with only 6k miles on them, they looked great the other day when I pulled them for an intake valve cleaning so I doubt those are the issue. It could be that one of the coils isn't up for the job under the higher cylinder pressures. Thankfully this would be easy to diagnose. I remember reading the stock coils may need replacing at 80k miles...mine have 75k miles on them and I am throwing all this boost at them.
Anyone have anything to add? Oh, I do have an EQT LPFP on the way which will go in when it arrives.
Edit: Log after LPFP
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