Search Results for ‘dragrace.’

I put a new y pipe and exhaust on my 2012 rc hemi. It's 2.5" from the the cats to the "y" then goes into 3.5" (very short). In to the 40 series single in/ single out, then "y"s into the factory dials with resionators. My question is should I just change the muffler out to a magnaflow? Or...