I had the Morgan Aero Racing stage 1 exhausts and am currently running the stock exhausts with front bafflectomy and slightly enlarged preexisting holes in the rear baffle. No difference in performance that I can tell. I prefer the exhaust note of the modified stock exhausts.

I have not touched the cats and probably won’t.

Last edited by Sportster; 12/02/21 05:11 AM.
2015 M3W, Morgan Aero Racing Stage 1, Garage 56 Stage 2, sport black, saddle tan, jeweled SS dash.