phone demon tweaks and ask them. i think only certain ones are road are road legal, because some of them are only for motorsport. i might mod or get someone to mod my spare exhaust for the vit to have a cherry bomb straight through silence rather than the stock box silencer. i wanted to swap my exhuast for two reasons, one because you can get a slight power gain at higher revs but also my current exhaust hangs down so that every rock, lump of mud, tree branches, you name it, my exhaust has hit it :lol: if you do put a cherry bomb on, look at getting a 4-2-1/tri-y manifold like a janspeed as they can also increase top end power. one downfall to the straight through exhaust, is you do lose some bottom end torque, not sure why, just what ive read and heard from people. to be honest, i usually rev the crap out of the engine, so bottom end torque doesnt bother me that much :lol:
