Description
vance hines fp4 adjustable fuel injection tuner for harley 2OM Fits: All H D with 1 4 20 15OM Fits: All H D with 1 4 20 threaded fork stem By City Roadster Helmet Visor I'm getting a U0100 error code after flashing with the Vance & Hines FP4 the best selling ECU tuner in the world for Harley Davidson motorcycles