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Well good news and bad. Good news first. Headers, bypass pipes and BB muffler is only loud when you romp on it and all resonance/drone is gone. Mark, the previous owner had considered reinstalling the factory muffler bc of the drone. It's all gone. Car actually sounds quieter inside! Wife says its pretty loud when I passed her but that was accelerating past 5k rpms. I am more than happy with the sound.
Bad news...had to install both sets of the max speed mini cats. The front 02 sensor wiring wasn't long enough to reach. So now the 02 sensors are both reading the same and I have a cel. I guess I need to extend the wires or else get a 90 adapter. My only fear with an adapter is that the 02 sensor will be too far out if the 02 stream to read correctly. Right now I imagine its running in strictly open loop mode.
Advice?
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