[honda_luvr_2000]

well first things first. wut brand exhaust was it? was it a weld-on muffler or a full catback exhaust? if it was a catback kit, then it "should" already have a resonator in the mid-piping. like turtle said, it'll look like a bubble in the piping. if it was a weld-on straight thru muffler, most likely thats the noise problem right there, not the engine's tuning. a lot of the straight thru canister weld-on mufflers just sound like ass period. besides soundiong bad, they also don't do anything as far as performance improvements either.