Quote:
Originally Posted by BOLIO 671
If U want to stick with the Nismo Cat back that’s fine...to save u headaches in the long run ur gonna have to go with a LTH or Test Pipe...Exhaust temps will increase being boosted so u will eventually end up burning through ur Cats or HFCs...if u want something a little toned down then make sure u get resonated Test Pipes...they sound cleaner and are less raspy than straight test pipes
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This. THey will eventually let go. Not as quick as HFC's but they will.
If you want the quietest test pipes on the market then look at the Motordyne ART pipes. THey sound exaclty like High flow cats.