The BoosterPlug is accepted world wide, as a brilliant and affordable way to transform your Harley Davidson Fat Boy FLFB from ”OK” to ”Absolutely Marvelous”.
No need to spend a small fortune on complicated devices like the Power Commander + endless Dyno hours, to make your bike run like it should have from the factory.
The BoosterPlug is installed in less than 10 minutes. It plugs directly into your bikes wire harness using original connectors – no cutting or splicing.
The smarter choice to optimize the fuel Injection on your motorcycle:
- Fix the snatchy throttle response problem
- Harder acceleration
- Eliminate the low speed surge problem
- Stronger and more reliable Idle
- Reduced popping in your aftermarket exhaust
This version of the BoosterPlug covers all versions of the Harley Davidson Fat Boy FLFB and FLFBS with the Milwaukee 8 engine (2018 to 2020).
Please note that we can not build a BoosterPlug for the "2021 and newer" model due to new emission regulations. You can see the detailed explanation here
General Installation Instructions
Bike Specific Installation Instructions