Variant 1
ECU- Catalog engine
- 1584 67HP
- Controller brand
- DELPHI
- ECU
- J1850
- Stock power
- 67 HP
- SW upgrade
- 32899-07H
- Calibration
- 32899-07H
HARLEY DAVIDSON · J1850 ECU
HARLEY DAVIDSON Fat Boy Lo J1850 tuning files
The HARLEY DAVIDSON Fat Boy Lo on the J1850, mapped from stock file to finished result. The matched variants sit between 67 and 67 HP from the factory. Stage 1 and Stage 2 are the safe starting points for this platform. Every file is matched to the exact calibration on your vehicle and signed off by an operator.
Available solutions
What we can run on the J1850 for this vehicle — the precise options narrow down by engine and software version.
Engine variants & ECU software
1 distinct variant for the HARLEY DAVIDSON Fat Boy Lo on the J1850 ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the J1850 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the HARLEY DAVIDSON Fat Boy Lo on the J1850?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the J1850 ECU software on this model?
Yes — the HARLEY DAVIDSON Fat Boy Lo on the J1850 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.