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High RPM / Load Misfire
2 Attachment(s)
Drove car, parked it for a couple of hours, turned it on crazy misfires under load. Under 3.5-4k pulls hard, but everything after that is misfire city. Fuel filter? Fuel pump?
Edit: a good example of the misfire is at t=66 in the log |
You are losing sync with code 39, take a composite log of this and it should help diagnose what's going on by looking at cam/CAS sensor inputs. I would recommend posting the tune too
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3 Attachment(s)
I think I was VEAL'ing at the time and that's what is causing the sync loss (writes to the ECU, I'm on a MSPNP2). But I'll take a composite log tomorrow. Tune attached, note: TPS is disconnected hence why overrun fuel cut and accel enrich is disabled.
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Figured it out, bad fuel pressure regulator.
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