Harley Davidson Softail Slim S (FLSS) (2017)

The BoosterPlug is the easiest and most efficient way to upgrade the fuel injection tuning on your Harley Davidson Softail Slim S (FLSS) .

Compared to the Power Commander, the BoosterPlug offers similar or better results for must owners - at a much lower price and without the complicated setup.

You don't have to be a trained engineer or a computer programmer to install the BoosterPlug. Easy and fast plug and play installation.

The smarter tuning choice to optimize the fuel Injection on your motorcycle:

- Fix the snatchy throttle response problem
- Faster acceleration
- Eliminate the low speed surge problem
- Stronger idle and less tendency to stall
- Far less popping in the exhaust on deceleration

This version of the BoosterPlug tuning module covers all versions of the Harley Davidson Softail Slim S (FLSS) (2017).