Does anyone know if I put slip-on mufflers on my 2013 TG and not change the air filter. Will the trike be OK without a down load or a tuner. Kind of new to this and any info would help. I have heard if you do this the O2's will compensate for the new mufflers? I just want it to sound good and run good. I am not an extremist to the n"th degree. Thanks for your help:Shrug: