Where are you located? I libve near chicago too in Barrington, and use a dynoport 2 inot 1 also. No jetting is really required, its tru, my shee is stock wiht foam proflw and snorkle off, airbox vented. im running a 220 main and stockthe rest of the way around. 2 into 1 pipes rely on backpressure for torque if Im not mistaken, and dont need to really be jetted. you ARE gonna lose your 6tyh gear top end with that pipe, fyi. We shold ride sometime.