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I recently installed a set of long tube headers, x-pipe, and high flow cats. Driven the car about 100 miles and its running great, but now its throwing a code: P0161 ("C" so its current)
I know this is one of the O2 sensors. Anyone know if its one of the fronts or one of the rears. I'm assuming its one of the rears, since the car still seems to be running fine. If it is one of the rears, should I just ignore it until I can get the codes for the rear O2 sensors deleted by a tuner?