Hi Folks, Can someone with an M4 GP slipon post up and say honestly how loud they are? I want to get one because I love the fact that it doesnt use a rear hanger but if it is crazy loud I dont think I could handle it. Try comparing the volume to another pipe you may have heard so that we get an idea in real world terms of how loud it actually is.
Cheers:cheers
Cheers:cheers