My current exhaust consists of the centre resonator/muffler and is dumped before the diff since its a ute its legal but ill agree mine isn't even loud.
When i took it for a test run around the block with nothing from the cat onwards it sounded sick, and also had a little burble on deceleration similar to a V8 but a miniature version :w00t:
I don't think you could do anything to harm the engine by reducing back-pressure except sacrifice a little bit of low end for a better mid range and top end, i mean look at V8 Supercars, Formula One, Touring Cars etc none of these have mufflers and it doesn't harm them except they have less bottom end grunt.
But i may be wrong? I would like some opinions as i gotta do something to make my ute sound meaner asap :thumbsup:
Steve.D what you think about Exhaust Cutous lol,
YouTube - HEMI Dual Exhaust Cutout Valves- Engine Running
Matt.