i have narrowed my decision down with exhaust i want to kno wat sound better f7 or toomey i want to kno by first hand experience not by wat sombody told u or wat u heard i jus like the way the toomey silencer is cause the tip doesnt curl down it stay up and it circle like 4-strokes and it makes it look better also i was wondering can u change the tips on the f7 pipes cause they look stock tht was also another turn off from the f7