darksnake Posted May 16, 2012 Report Share Posted May 16, 2012 Do the GT500 stock mufflers have a better flow rate then '07-'09? Louder? They do have the larger 4" tip, didn't know if internal piping/baffling was larger as well? Also, would anyone know the Ford part number for the 2010 mufflers, should be on bottom of muffler and start with F-1-? Link to comment Share on other sites More sharing options...
mgmustang1 Posted August 28, 2012 Report Share Posted August 28, 2012 They are louder Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted August 28, 2012 Report Share Posted August 28, 2012 They do have the larger 4" tip, didn't know if internal piping/baffling was larger as well? Also, would anyone know the Ford part number for the 2010 mufflers, should be on bottom of muffler and start with F-1-? As someone already said, they are louder. I know the tips are 1" LONGER but I don't remember them being larger ID/OD. I can check for you if you like (I have mine on the top shelf in my garage). I can also look for a P/N when I check the tips. I don't remember seeing one on there though. Paper label? Stamped number??? I'm off to the State fair but I'll try to remember later when I get home. Ping me privately to remind me, if I don't reply soon; phill.pollard@comcast.net Phill Link to comment Share on other sites More sharing options...
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