throw out the TORS, go for V-FORCE 4, IBOOSTERS, keep up the 15T - 42T i installed the same and they ride very well, and some one said (BOOST BOTTLES) dont do anything, it worked great with me, +4 adjustable stator is soo good, and get a GYT-R cdi, they are great too ..... keep it stock, best way to enjoy riding ....