This thread makes me glad I was an early adopter.
Its worth the wait guys, particularly on a slant 4 K1200GT.
It was a marked improvement, more so than my R1100GS
A pain to install (remove plastic, lift fuel tank, install with long needle nose) but my gas mileage even went up 4 mpg according to the computer. Driveability much improved.
Couple vintage tube testers hanging around in that photo up there...