SteelTownStang Posted February 17, 2012 Report Share Posted February 17, 2012 Just installed the Borla S-type on my 2012 GT500. While it sounds good, I would like more volume. Are there any 2 3/4" H w/high-flow cats available that can connect directly to the OEM mid-pipe? Also, would the high-flow cats make any noticeable difference in sound? Lastly, I'm planning to reinstall my 2.59 pulley w/tune. Any special tuning required w/the high-flow cats. Thanks! Quote Link to comment Share on other sites More sharing options...
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