Are you not happy with the 4.5 Street Cannons? I believe that you might have to go back to your local HD steeler to have a map download for the 4 inch Vance and Hines. I’m no expert but I think this is one of the drawbacks to the HD tuners. Other tuners allow you to download maps to the bike via your computer or other means.
15 SGS Amber Whiskey; ThunderMax tuner; Ceramic True Duel headers; 4.5 inch RC Exhaust slip ons ;LED turn signals/ run lights; passenger backrest; one inch passenger and rider floorboard extensions;stage one air cleaner. 4 point docking system; air wing.
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