Cats and tune
This is a discussion on Cats and tune within the External Engine forums, part of the LSx Technical Help Section category; Originally Posted by karpetcm Im suprised by removing the cats there are no gains, those cats are big and all ...
12-03-2008, 05:21 PM #21
I did install long tube headers and off road Y-pipe,,,after the cats were already removed,,,and this only got me another tenth and 1 mph. Again a stock internal engine. Something with a cam would have responded better. But it was worthwhile as I needed them to support whats in store later.
12-03-2008, 05:26 PM #22
12-03-2008, 05:31 PM #23
Well they probably do restrict,,,I just found they didn't make a difference on a stock motor in my case.
Now if you go building a 5-600 hp monster that requires more exhaust flow then there is probably alot to be had from removing them.
12-03-2008, 10:22 PM #24OMGls1jzGuest
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