Yes I did the throttle mod on my ZX9 and went down 1 tooth on the front sprocket as well... Made a huge difference as I did them both at the same time... dropped my time at the island 2 - 3 secs immediately I would guess.....
I have a TRE installed in the Zx10 track bike as well as 1 tooth down on the front, K+N air filter, gutted cat, power commander 111 and a set of Akros.. it is going really well.. getting much more drive out of the corners in a better gear, much faster than stock.. so the insert will be going in this weekend.. Just wanted to do the changes 1 step at a time so you can feel the difference.. !! Might get into it tonight..??? Thanks for the advice guys...!!! Macca
