Sleek - Sounds like you broke it in a modern fashion. I broke mine in slightly different but not much.

I idled one tank @ 180-190.

Let cool.

Put on track limiting throttle to about 1/4. Didnt really blip the throttle as much as pull smoothly. Made sure engine was up right at 180 for an entire tank. Let engine cool back down. Then repeated the procoess with pulling up to 1/2, then at 3/4. After that its been pretty much race tuned. I didnt really pull full 100% throttle for too long for a little bit.

I run Sidewinder 30% Worlds Blend. I am also running the AE factory team pipe which is the 2035.

I know my buddy got 2 GRP's the same time I did and he ran the GRP new GRP pipe that came in the combo. He ran Byrons 30 Gen 2 which is also good fuel. However his motor didnt have the mid to bottom mine has. Pretty much identical breakin procedure and he has a good amount of pinch as well...