I just received my new Hindle exhaust from WARREN. I installed it right away. The Exhaust was a full 4-2-1 system, with a very 'open' can. I use a K&N filter. I am at 800 feet above sea level. I have a '97 Bird. I used a Factory Pro jet kit. I am running 150 mains, Factory Pro needles at the 3rd clip position, stock pilots, and have the screws 2.75 out. This caused my bike to really wake up. The exhaust has a low, quiet rumble at idle. When you get into the throttle, it gets pretty loud(music to my ears). The performance gains are very noticable. It now has great power between 3 and 7 grand, where it was lacking before. I can now pull the wheel up without any trouble at all.
Thank you Warren, for that fast response, and opening the door to many ear to ear grins.
Brian Bongfeldt