I ran it some a few weeks ago in Arizona but I didn't race with it as it's still not fully broken in. The engine already feels like it has great power from the bottom all the way to high RPM's. In a few test tanks I ran I was able to get 9:00 and 9:30 on timed runs and that is still running fairly rich (210 degrees) not to mention The Nitro Pit is a huge track where you are on the throttle a lot!! I ran the 192 header and 2045 pipe that it comes with.