krispykritter Posted July 7, 2021 Report Share Posted July 7, 2021 Hi all, This may have been hashed out before, but I haven't been able to find an answer. Our car has cats built into the exhaust header...aka each bank goes from 3 to 1 then into a (pounded out) cat, then out of cat to another 2 to 1 where the two banks meet, then a single pipe into another pounded out cat. We'd like to cut these cats out of our headers and weld in a straight pipe. So the rules say exhaust free downstream of the collector - and a collector is where the individual cylinders' exhausts are merged into 1 stream. Does this mean I can chop this header cat out and straight pipe it for zero points? Pretty please? Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.