So, when I bought my truck it had a really badly done true dual straight pipe with no CAT. I just yesterday had a Magnaflow hi-flow CAT and a Flowmaster Super 44 (stainless steel) put on with 2.5" piping. It exits in front of the passenger rear tire with a rolled tip.
I had to have a CAT because there is emissions where I live.
The newly gained back pressure is awesome! But it is super quiet! Does exhaust flow get restricted when the CAT is not fully broken in?
I would appreciate any input.
I may just have to replace that muffler with a glasspack or something if not.