Old Grumpy Posted February 11, 2006 Share Posted February 11, 2006 I have 06 LGT with a UP, Cobb DP with HFC and AP running stage 2 into the stock catback. How much gain in torque, horse power and performance would there be with a free flow catback exhaust? :confused: Link to comment Share on other sites More sharing options...
tintinet Posted February 11, 2006 Share Posted February 11, 2006 Not an expert opinion here, but I've been told about 10 HP and 10 ft/lbs. torque, when I've asked that question. Link to comment Share on other sites More sharing options...
franklin Posted February 11, 2006 Share Posted February 11, 2006 Good question. I dont have the awnser though. Anyone with the facts? Link to comment Share on other sites More sharing options...
-TT- Posted February 11, 2006 Share Posted February 11, 2006 http://www.legacygt.com/forums/showthread.php?t=17273&highlight=stock+catback Link to comment Share on other sites More sharing options...
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