I started a similar thread but no luck… just needing knowledge on the reduction boss IGR. What’s the largest tires i can go with with the IGR, with COPS tune, and the larger throttle body, with weisco pistons. But no portals.. could i do 37’s ? Or would 35’s be my max? Also would you do the Hess 11:1 pistons Vs the weisco !0:1.? I bent a rod so i have to replace the rod, so i was gonna go ahead and upgrade wherever i can.. any input would be great thanks