DK Custom Products

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V&H FuelPak FP4 EFI Flash Tuner w/ Auto Tune for Stage I & II Upgrades

Availability: In stock
Item #: DK-VH-FP4
Manufacturer: Vance & Hines

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DK Custom V&H FuelPak FP4 EFI Flash Tuner w/ Auto Tune for Stage I & II's Harley-Davidson Vance & Hines


 Flash Tuner

Harley-Davidson Models

(Including CVO's)

Made in The USA


Features & Specs:

  • No Computer Needed - Works with iPhones, iPads, & Android Phones
  • Includes Instant Access to Custom Maps 
  • Includes Auto Tune
  • No Cable Needed - Connects wirelessly to your smartphone
  • Flash Tune & Put Away   OR
  • Flash Tune & Use Your Phone to Monitor Real Time Sensor Data
  • Can make quick adjustments to your Tune.  No computer needed.
  • Stores up to 6 Different Tunes, PLUS original
  • Super Easy to Use


Download the Fuelpak FP4 App onto your phone, plug in the FP4 to you motorcycle and start the pairing process.



Select a map based on your motorcycle (you can also fully customize your tune with the FP4 editing tools-on your phone!)



After selecting the custom map for your motorcycle, the FP4 will flash that tune into your bikes ECM and you are ready to ride!


  • LIVE SENSOR DATA  Viewed through your smartphone to display, Speed, RPM, Cylinder Heat Temperature, Voltage, Gear selection, Throttle position, MPG, & other useful Information.
  • AUTO TUNE  This feature allows you to precisely tune your motorcycle for your specific air cleaner, exhaust, riding style and environment.  This will get your bike dialed in without the expense & hassle of a dyno tune.
  • POWER & TORQUE  Horsepower & Torque displays on your smartphone.  While these values are not as precise as a dyno session, they are pretty close, & fun to watch.
  • Revolutionary Customer Service  Built into the FP4 phone App is a way to communicate with V&H Customer Service Techs, even allowing them to see your tune and modify it if needed.



2007-2022 Sportster Models

2007-2017 Dyna Models

2007-2023 Softail Models

2007 - 2023 Touring Models (including CVO's)


NOTE: Vance & Hines FP4 does not support all aftermarket camshafts (they do support some cams) or big bore kits


Save 5.55% by using the Instant Savings Code:  Save555  in checkout.


 California Customers:  We are sorry, we do not ship the V&H FP4 to California.

Caution:  Motorcycles modified with this High-Performance part may not be legal for public road use in some areas.  The user shall determine suitability of this product for his or her use.



Video On Auto-Tune HERE

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