Fuelpak FP3!

Tune your Harley-Davidson with your iPhone Fuelpak FP3 from Vance & Hines makes your iPhone one of the most powerful flash tuners available. Youve already selected the best exhaust system for your Harley, now complete the package with the Fuelpak FP3 for optimized performance. (Harley-Davidson is a registered trademark of Harley-Davidson Motor Company.)