Rough running after flash and return to stock, TPS problem?
Oh no!
In my quest to fix my speedo I did a simple PCM flash. The car immediately ran poorly. I don't think I touched any parameters that should affect engine performance so I took a short drive to see if it got better. It didn't, so I flashed back to my previous stock config, but now the TB's running even worse!
It looks like the TPS value is spiking downward every couple seconds at idle, each time almost causing the TB to stall. Do you know what could be causing this? Faulty TPS? Need for adjustment or recalibration?
Thanks in advance for any help you can provide!
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