Did a mild porting few days ago and tonight finished the muffler mod on the 360; oem muffler with the split design where the muffler feeds into a shroud….no way to get rid of that “popping” noise…problem solved, scrap the oem muffler and build your own. Definitely louder but throttle response is greatly improved, instant rev’s and overall well worth the time. Hope to have chance to put it to use next few days.
