Originally Posted By Streetwize
Fast,

Yeah the ported 337 works awesome with the Chap CNC Max Wedges on the 517 as you know i really liked the ported 2D but if anything the 337 is even better. The throttle response is even quicker than before. Revs like a comp eliminator motor...I'm impressed.



I was pretty sure if you tried one you'd be a believer.