I actually gained with the smaller filters. The RU 3780's gave me 160,56 torque and 156 HP.
The stoock roadster was disapponting ddue to the restrictions. Can't remember the numbers but after he opened the secondaries 100% and gotr his AF right, I think he was at 128HP and 148 or 9 torque.
Bruce, how about shedding some light on the stock bike. I just can't remember the numbers.
BTW no butter in my CB, maybe more bacon grease.lol