RZR XP 1000 ECU re-flashed vs Exhaust w/ tuner December 20, 2015 Which route r people finding to be a better route to go. Slip on exhaust with ECU re-flashed or a full exhaust with the matched tuner to the exhaust. Safer and better results. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related