I have been using mine for over a year with the Hilltop flash (track). A lot of people argue and debate the BHP figure. In my opinion the number is not important, what is important is the difference between the before and after runs. How the bike feels and delivers the power when you are riding it. The changes made to the ABS/TC and the power restriction reduction in the 1st 3 gears.
I cannot recommend Geoff highly enough, he totally transformed my bike.
Jeremy McWilliams rode it and commented on how the bike "didn't hold him back like standard S1k's do". This is all due to the ECU reflash. He also commented on the sweet gear changes, due to HMSS quickshifter.
Before 195.96bhp & 80.21 torques (PCV, Arrow works Titanium))
After 204.85bhp & 93.79 torques (ECU reflash, MWR Filter, Arrow Works Titanium)
As I said top number is of no real interest as it will vary from Dyno to Dyno - Before and after and how it works is what it's all about.
Regards
Davy