Hey guys Ive been braking in my tuned .21 today. This is the first high end engine I have broke in and tuned. I managed to idle 3 tanks through on the work bench. And man I understand what a tight pinch means now. I used the heat gun quite a bit. I tell ya though it took forever to burn up a tank, like 30 plus minutes. After the bench I took it to the street for 2 tanks doing fairly slow passes and leaning the hsn just a couple hours or so. These tanks took like 30 min to burn up too. I read on the threads that these go anywhere from 10 to 12 a tank. Is this just how the breakin is because your not on the throttle consistantly? I just thought it was a big difference from 10 to 12 minutes. My temps were around 160 to 180ish.