Quote:
Originally Posted by Noob4Life
Then how is it a properly warmed up hf cat can still pass californias sniffer test?
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I'm reading up on this and as long as the HF cat is built to the correct standard and placed close enough to the headers it's going to do a similar job to the stock cat/s.
Everyone has followed cars with the cats deleted and it's that bad you either have to overtake or drop back a long way if you don't hit the recirculate and windows fast enough.