i seen that the ti force exhaust is the only other full exhaust made for the buell xb. is it only made for the 12 or is the 9 and 12 exhaust diameters the same? Has anyone heard how the performance is from the exhaust? i had a jardine and liked it but thought i could definately find something better. Hal's Harley Davidson in wisconson said that it didn't perform all that well and they said they did the same dyno tests to all exhausts just like american sport bike.com and said they came up with much different results.