does anyone out there know how loud a mac catback kit is with a x-pipe and
how bad is the drone under slight load and 55-65 mph cruising compared to
the 2 or 3 chamber flowmaster catbacks

 

the mac doesnt have much drone at all, and a ton less than flows. as for how loud it is while crusing you cna hear it but its not super loud at wot its very nice and loud about a bit louder than a 2 cahmmber. but deeper.