GTO and 3000GT Rear Pre-Cat Eliminator Pipe

GTO and 3000GT Rear Pre-Cat Eliminator Pipe

This pipe directly replaces the factory small catalytic converter that is bolted to the rear turbo and goes down to the downpipe. The rear primary O2 sensor mounts in it on a 3000GT and this can be used to mount a WB02 sensor for use on the rear bank of cylinders if your using a stand alone ECU

This catless pipe replaces that pipe, but offers a much less restrictive exhaust flow.

The manufacturer has done some work on the flange to have a little better clearance for the mounting studs/nuts on the sides of the pipe from earlier versions. Use of a flanged nut may overlap the welds where the pipe meets the flange. The nut will still secure the precat pipe to the turbo, or you may opt to use a non-flanged nut, or include a lock-washer between the nut and flange to fill in the space against the flange.