[iancp5]

Originally Posted by GMP

I had one on my HD VRod. All it is is a pulse stretcher device, extending the injector pulse width based on some small potentiometer adjustments. There is a newer all digital version as well. They work OK, but are no where near as precise as changing the map. The adjustments are limited to three RPM ranges, so you wind up being rich in adjacent areas of the map to the area you are trying to correct. Also, you can only increase pulse width (add fuel).

What is your problem? If its an idle issue you will be much better off adjusting the trim and air bleed. For what you pay for the TFI you can have the Technoresearch VDST, and do your trim, TPS reset, and diagnostics. If the base map is OK then the TFI is a waste and just adds complexity. The TFI is mainly used as a quick way for adding fuel when an aftermarket exhaust is used on a modern street bike, as they are set lean anyway from the factory for emmisions reasons.

I want to adjust the idle and I want it to start easier.