ok guys, everyone tells me that a cub will run 2 or 3 tenths slower with bigbores on it, and the thing is, i had grandriver sb pipes on and it blew them off, it sound like the motor wouldnt clear out, but then, i changed my pipes at the track, i put on my Wicked Performance bb silent pipes on, and it ran a million times better, it cleared out and everything, so if anyone could, id like to hear from the experts, and know what size pipe, and what kinda pipe i should run, it would really help me. thank you if u do.