I've decided to get the Hi-Flo Air Intake Kit and Screamin Eagle Exhaust 2 into 1 slip on for my Dyna Low. Or maybe the Vance & Hines slip on. The bike will then need to be re-tuned (mapped) to accommodate the upgrade and the Dealer wants almost $800 to do the job using the Dyno. I asked why so much and part of the cost is they give you the fuel pak module after the re-tune. That module cost over $400 but it is yours. They set the bike up and then remove the module to give to you in case you need to change anything at a later date. I'm wondering if the Vance & Hines FuelPak FP3 would be a better choice for only $350 and do the work myself. From what I read everything can be done in a few minutes and your Android phone becomes the Bluetooth link to the system. Anyone done this with the FP3?