Cell phone jammer is an interesting and helpful device when we don’t want to be bothered by the cell phone noise. I just bought myself a phonejammer the other day, it is working great and BTW, it’s legal here in my country.
Scenario 1: 2.5" from downpipe to straight flow muffler
Scenario 2: 2.5" from downpipe to straight centre box (also a silencer) to straight flow muffler
Scenario 3: 2.5" from downpipe to s-flow...