NISTECH, I think you're the one to answer this.
I'm currently having emissions (SES code P0135, and yes, sensor has been replaced) issues and the shop I had it at, and everything I can find, points to the ECU.
Now, if I took the car to the dealership, had them order the ECU, then have them install it there, would I be stuck with the ECU if it didn't fix the problem?
TIA
