[LiL Shoaf]

My Perrin UP Pipe came with a "resistor" that plugged into the stock plug for the O2 sensor to eliminate it and signal the ECU with the proper readings.. Did you get the resistor?? I can put an meet on it and tell you how many Ohms it is so you can just get one at Radio Shack or some such place and then clear your ECU and see if comes back on..