I've got a 1998 LGT with the 2.5 DOHC motor.
My primary cat has failed. Or the second O2 sensor, either way, both are getting replaced.
So, should I replace the secondary cat as well?
Pros: Using high flow cats, I'll get better performance
Going to put both cats before the O2 sensor so I have less chances of getting a P0420
Not risking the possibility that the second cat is plugged
Cons: More expensive
???
Opinions? Remember, I gotta make sure this car passes emissions, so no going catless.
Plus, no local shops are willing to do that anyway.
My primary cat has failed. Or the second O2 sensor, either way, both are getting replaced.
So, should I replace the secondary cat as well?
Pros: Using high flow cats, I'll get better performance
Going to put both cats before the O2 sensor so I have less chances of getting a P0420
Not risking the possibility that the second cat is plugged
Cons: More expensive
???
Opinions? Remember, I gotta make sure this car passes emissions, so no going catless.