Ricer.

And I told him the same thing last thursday. If its pulling in fresh air into the exhuast system before the 02 sensor it thinks the air/fuel mix is off then it goes into limp mode.

He also said his IACV valve is bypassed. Which is odd because the car will not idle with out that unless the throttle plate is adjusted to compensate for that (which I doubt it is.) I dont know why you would bypass the IACV in the first place.

Check, TPS, Water temp sensor, map sensor and knock sensor. All those things could have an effect on how the it runs. If any of those are not working the ECU is going to pull timing like a mother fucker and since you dont have a IACV its not going to run at all unless your foot is on the throttle.