Originally Posted by hdcruzer

This is just my opinion but your still to fat. This is how I do it. These motors are really not that hard to break in. The first thing you want to do is no plug in it heat it up to 200-220 and set it on the box ,3-4 5 sec spins and about 70 percent of your pinch is gone. Then let it idle a tank at med high idle. Get it to stay stable at 220. Let it cool down to about a 100 fire it back up toss it on the ground and run a tank through it at 1/4 throttle. Let cool, and fire it back up run a tank through it at 1/2 throttle. On the fourth tank, toss it on the ground and start going 3/4 to full throttle in short burst. You may have to lean your HSN some to keep it from dying. After this tank you will notice you have eliminated almost all the pinch and have tons of compression. Then take it to the track and start putting a tune on it. Buy the 6th or 7th tank about a half gallon it should almost be there and ready for a full race tune. Full race tune depending on weather and climate should be anywhere between 240 and 270......