Please help! RPM won't go over 2200.

[LightningGSX]

This doesn't happen very often, but it sounds like it may be the analog ground inside the ECU.Unplug the ECU, take a multimeter and test for continuity between pins 24 and 106, then check between pins 17 and 106.Lie I said, this is a long shot, but this is pretty much exactly what happens when the analog ground fries in the ECU.Other than that, it could be the old DSM capacitor problem, bad caps will have a different effects/symptoms on nearly every ECU.