im kinda lost on the diameters, there are quite a few and i dont no which mean what? im goin with a 2.25 inch all the way back.
i would suggest seeing how it sounds without a resonator first. I planned on getting a resonator for mine, but i ended up liking the way it sounded without one. Its easier to add one then take one out.
about diameter, make sure the inlet/outlet is the same diameter as the rest of your exhaust piping. dont worry tto much about the rest of the measurements (case, etc..) also decide on what length to go with longer=more sound dampening. i think 18 inch is about average.
