Add additional Stage Upgrades later, and you simply upload the proper ECM calibration to match the model and hardware.

Start with a high-flow air cleaner and Street Performance mufflers and upload the calibration that provides the best performance mix. Once installed, the kit allows you to adjust key parameters or simply upload the latest Engine Control Module (ECM) calibrations to match your bike’s state-of-tune. The Screamin’ Eagle ® Pro Street Performance Tuner is designed to simplify management of engine operating parameters as performance modifications are made. FINAL SALE, NON-RETURNABLE IF BOX HAS BEEN OPENED