. Arlen Ness Big-Shot II Adjustable Fuel Injection Tuner for 2007-2011 Harley Davidson Big Twin (except 2008 FL) Improving upon the original Big Shot the Big Shot II now gives the user the ability to add or subtract fuel from the fuel injection system. Using the same load based technology as......

. Cobra Fi2000 PowrPro Tuner Digital Fuel Processor for 2008-2011 Harley Davidson Softail Motorcycles With Cobra's Fi2000 PowrPro tuner installed on your bike you have your own personal built-in dyno that analyzes your bike's performance and constantly tunes the air/fuel ratio for ideal EFI......