just curious, how do you bend valves by adding an air filter and exhaust?
No idea. When I took the bike in for 7500 mile service I had one bent. Not attributing it to the exhaust of course, just mentioning that I had them flash the ECU while they had it in for a bent valve replacement.
2013 M1100 EVO 20th Anniversary 93/200
2013 Multistrada S Touring
Gone but not forgotten: 916, 748, 749, 999, 996, ST2, Sport Classic 1000, 748 again, 848