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Originally Posted by Bigsmoothlee
I wanted to run a ROW setting on the 3.4 engine I was installing, which disables cat. efficiency and secondary air injection related fault codes.
I live in NYC, so if I go to inspection and they plug my car into the state OBD2 reader, will I pass? Or will it say "systems not ready"? I would really like to run a nice set of headers and a catless exhaust...
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If you delete all of the cats, the vehicle will no longer be OBDII compliant, and it will subsequently fail emissions (not to mention CEL's). In addition, from a performance standpoint, it's been my experience (with the 3.2 engine) that going catless will result in a measurable loss of low end and mid range torque.