14,000 miles so far with my Dobek installed..... yeah, it works. Although if all a guy is gonna do is install a K&N and a slip-on can, a TFI is not mandatory. The bike runs juuuuust fine without remapping.
- however -
Once you start modifying the air box, removing the throttle plates, do the 02 bypass, and/or replace the header system, you simply gotta modify the fuel mixture as well.
Problems?
I don't quite understand it but..... on rare occasions, my red fuel injection idiot-light comes on. It seems to happen when I'm on the freeway cruising at a steady speed in the heat of a hot HOT day(??). I would say that in 14,000 miles, this has happened to me no more than 5 times. I simply pull over, turn the ignition off, start up the bike again, and ride off.
Dale Walker of Holeshot (on-line) offers a Dobek. If you pay more for your Dobek through Dale, you benefit from his hours and HOURS of testing on the Dyno, and the resulting settings that he has settled on.
------ If I had to do it all over again, I would do NOTHING more than replacing the OEM air filter with a K&N, drilling a 1" hole in the air box lid, and adding any after-market slip-on muffler. Of all the mufflers out there, I would lean toward a Holeshot 17" muffler, adding Dale's (removable) DB reducer for another $40....., gving me the option to make more noise or benefit(?) from less back pressure