S-AFCII Help!

[RotaryDiagnostics]

Originally Posted by Phoenix7

You still should be ok to mash around in a stock setup on the street but if it's for the track then you better take the car to your tuner and have him retune it....after it's re-installed properly.

TPS? Thermowax? vac leak somewhere in the intake path causing the rough idle?

Agreed on the retune.

Had a CEL for the TPS at an event in May and replaced it prior to this latest event with a new TPS ($$$). Checked voltages on the new TPS and set it using the 2-bulb method. Rechecked it since experiencing the latest problem and it was within spec. The accelerated warmup system has been completely removed including the thermowax (if that's the wax thingy you're referring to). Could be a vac leak but close inspection hasn't found one. I will do some spraying around with water mist to see if I missed one. Will also remove all the intake piping to inspect as well.

Car ran fine with the new TPS until I ran several sessions at VIR last weekend. Started idling rough after a couple of sessions and by the last session on Sunday, the idle was really rough and the engine was missing slightly at high throttle settings as well. Ya gotta love these cars.