First I drilled my stock exhaust gave me a mild improvement in performance and of course sound. Then I took the quantum leap into the world of custom exhausts. I now have a tuned length 2.5" twin system and the difference by the Seat 'O The Pants Dyno is chalk and cheese!!!
Hopefully you will be able to catch it here:
It is being booked in for a full Dyno session within the next few weeks.