here is a video testing a JP-1 tuned pipe on the JL 21....Very good power, likely well suited to a Truggy...we also ran a JP-3 and the video will be up shortly.....FYI this engine is actually very smooth, we are just driving it wide open all the time so it looks crazier then it needs to be

http://www.youtube.com/watch?v=q7hsC-jaEow&fmt=22