V & H Fuelpak FP4 - Pan America 21-On

The Vance & Hines Fuelpak FP4 is a plug-in ECU tuner for the Harley-Davidson Pan America, 2021 onwards. It succeeds the widely used Fuelpak FP3 and puts tuning, live engine data and diagnostics in the Vance & Hines FP4 app on your phone, so you can flash a new calibration in the shed rather than booking dyno time.

It suits riders who have fitted a slip-on or full exhaust, an aftermarket air cleaner, or both, and want a calibration matched to that combination. You can pick a dyno-developed map from the Vance & Hines library for your specific parts, or use AutoTune to refine a map from your own riding, then flash the result back to the ECM.

Live sensor data and the ability to read and clear trouble codes also make it a useful everyday diagnostic tool, and Vance & Hines back the product with support from their own FP4 technicians.

• ECU tuner for Harley-Davidson Pan America 2021 onwards
• Controlled entirely from the Vance & Hines FP4 mobile app
• Live sensor data streamed in real time while you ride
• Reads and clears diagnostic trouble codes
• Library of 49-state emissions compliant calibrations dyno-tuned in-house by Vance & Hines
• Maps selectable for your specific air cleaner and exhaust combination
• AutoTune mode records data from the standard O2 sensors as you ride
• AutoTune data flashes back to the ECM to refine an existing calibration
• Backed by Vance & Hines FP4 technical support

Follow the installation instructions supplied with the unit for connecting the module to the motorcycle's diagnostic connector, and make sure the plug is fully seated before powering up.
Make sure the motorcycle's battery is fully charged (or a charger is connected) before flashing the ECM — a drop in voltage part way through a flash can leave the ECM in an incomplete state.
Do not crank the engine, switch off the ignition or unplug the module while a flash is in progress; wait for the app to confirm the process has finished.
Keep the FP4 app and the module's firmware up to date so the latest calibrations and fixes are available.
Select the calibration that matches your actual air cleaner and exhaust combination, and reflash whenever you change either component.
For AutoTune, run the mode over a varied ride covering a spread of throttle openings and gears, then flash the collected data back into the ECM once you are finished.
If the motorcycle is going in for dealer diagnostics or service, return the ECM to its original calibration through the app first.
Store the module in a dry place away from heat and moisture when it is not fitted, and keep the connector clean and free of dirt.
Wipe the housing with a dry or lightly damp cloth only; do not use solvents, and do not pressure wash near the diagnostic connector.
Calibrations are supplied to 49-state (US) emissions specifications — check current Australian road-use and emissions requirements for your state before riding on the road.