January 7, 201313 yr #1 going in car. (03 ba auto)Xcal3 60lbs dekkasrapid valve srpings would it be advised to do cat back exhaust aswell ??any help would be nice.
January 7, 201313 yr #2 depends on how much power you want. I got a hiflow cat and std exhaust and it is good for around 300-330 rwkw
January 7, 201313 yr #6 Cat back will result in SFA more power. Change the cat only if you're happy hacking up the stock exhaust or replace the dump and cat if you want the keep the stock exhaust intact.
January 7, 201313 yr #7 Author wouldn't install the cat for more pony's. just thinking about all the people reminding me about "supporting mods" and all that jazz.
January 7, 201313 yr #8 Author waiting for mcdowells smart arse comment in.........3.....2.....1..............
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