mikeferrucci 
isnt the stock cat good to 300 hp?if so wont be a bottle neck untill he reaches that amount of hp.Originally Posted by blueguy
op: if you do keep the 3'' downpipe, then yes you need 3'' to 2.25' reducer so it will fit t your cat.
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05-14-2013
isnt the stock cat good to 300 hp?if so wont be a bottle neck untill he reaches that amount of hp.
op: if you do keep the 3'' downpipe, then yes you need 3'' to 2.25' reducer so it will fit t your cat.
Last edited by Grimsin; 05-14-2013 at 03:26 PM.
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
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