GrandPrix34 Posted December 25, 2003 Report Share Posted December 25, 2003 well a friend of mine kicked my ass in his Z34 auto 91...no mods, xcept a Borla XR1 muffler were the cat was and then straight 2.5 to duals. At the time i had only the pulley, cone filter and the flowmasters and he pulled on me like WTF??!? i found the muffler on JEGS and i wanted to ask everyone...would only that JEGS "Proven Race Muffler" really help??? Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted December 26, 2003 Report Share Posted December 26, 2003 if he has that in place of the cat and no mufflers along w/ that 2.5'' piping, then he will have a noticeable gain in highway power/topend pull..how did you race him, from a stop to what? or from a roll to what? I would imagine since he has the larger piping/free flowing exhaust that you would be ahead of him off the line, but he would start pulling on you after you're up to speed.. Quote Link to comment Share on other sites More sharing options...
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