So I put a E-cutout on my '12 and It sounds really hollow and nothing like it sounded on my '08. Could the problem be I had a flowmaster on the '08 and a magnaflow on the '12. I know the exhaust is dumped before the muffler but exhaust still flows out the back. Also I had the raceland on the '08 and a QTP on the '12. Also there is a horrendous noise at shift points at WOT. I'm incredibly disappointed. I loved the cutout on my 3rd gen and don't like it at all on this truck.
Living the dream.