THIS IS THE DYNO CHART SUPPLIED BY M4. THERE WERE NO JETTING CHANGES
MADE BETWEEN THE STOCK RUN AND THE M4 SYSTEM RUN. AN ADDITIONAL 2-4 HP CAN BE GAINED WITH VERY SMALL JETTING CHANGES. I HAVE HAD THIS SYSTEM ON THE DYNO AND CAN VERIFY THAT THESE HP CLAIMS ARE TRUE. WE GOT 10HP OUT OF JUST THE PIPE WITH NO JETTING CHANGES AND AN ADDITIONAL 2 HP BY JUST RAISING THE STOCK NEEDLES .025". THERE MAY BE MORE HP TO BE GAINED WITH BIGGER MAIN JETS. I WILL FIND OUT SOON.
