Captain_Panic1647545539 Posted April 25, 2014 Report Share Posted April 25, 2014 I got a mac 4-1 for my bike, but I think it is WAY too loud. I love the weight loss over the stock exhaust, so I was wondering if anyone had any experience swapping baffles, and what I should do to acquire a deeper and quieter tone. Quote Link to comment Share on other sites More sharing options...
SteveNartan Posted April 28, 2014 Report Share Posted April 28, 2014 Get a thicker pipe. Dragpipes FTW! lol. For real though. Tuning pipe resonance is possible by strategically adding mass at seperste intervals. Or then entire thing. Weld (or temporarily clamp) on some bungs and weighted arms and see what happens 82 xj?? Turbo? Quote Link to comment Share on other sites More sharing options...
RyM3rC Posted April 28, 2014 Report Share Posted April 28, 2014 I had an old 4-1 that seriously just had an endplate cut to fit in the megaphone part, with essentially two open-ended tubes welded together at an offset one of which exited through the endplate. Quieted it down immensely, and was very quick to remove- just pull the setscrew and pull out the back. Paint your color of choice with hi-temp and it can look pretty factory. Quote Link to comment Share on other sites More sharing options...
SPL_Josh Posted April 28, 2014 Report Share Posted April 28, 2014 mufflers fiberglass blown out or needing replaced Quote Link to comment Share on other sites More sharing options...
Captain_Panic1647545539 Posted May 1, 2014 Author Report Share Posted May 1, 2014 I have decided to try out some steel wool packing material. I will try to get a before and after video to see if it is worth it (probably not). Quote Link to comment Share on other sites More sharing options...
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