Resonated Test Pipes vs HFC’s in the long run

Originally Posted by Quicksilvers

In the long run you are better off getting resonated test pipes instead of test pipes with high flow catalytic converters because eventually sometime your high flow catalytic converters will indeed fail or get clogged up over time and need to be replaced. Do you have emissions testing where you are at would be the question? High flow Catalytic converters are only there to pass emissions testing. I wish I had just purchased resonated test pipes in the first place.