Now Supporting 2024 Harley-Davidson Vehicles!

TTS has released three new camshafts for Harley-Davidson Milwaukee-Eight models, the TTS-185, TTS-190, and TTS-195. See the details and performance charts on the Camshafts page.

TTS software has been updated to support all 2024 and earlier Harley-Davidson models, except for RevMax applications. Here is an example of a 2024 RoadGlide FLTRX 117, factory stock vs MasterTune tuning:

In October 2023 Microsoft released an update for Windows Security that breaks TTS software. Instructions on how to work around this issue are here: Windows Security Issues.

Calibrations are now available for 2022 Harley-Davidson models, including traction control models.

New versions of MasterTune BT, DataMaster BT, and VTune BT have been released. Download the software to get started tuning your 2022 H-D motorcycle today!

TTS MasterTune is the premier EFI tuning product for Harley-Davidson motorcycles. We are proud to announce that our latest release has key advantages for the 2021 model year over the competitors:

• Faster data collection.
  Collect data over 4 times faster than the competitors.
• Torque control tuning provided exclusively by TTS.
  Take full advantage of the newer models' capabilities using our free WEB service designed specifically for torque controlled motorcycles.
• Ready-made tunes for many aftermarket mods.
  Use ready-made tunes out-of-the-box or as a starting point to create your own custom tune.
• Greater access to ECM adjustments.
  MasterTune allows greater access to the ECM adjustments than the competitors. This allows for a higher quality finished calibration to be done.
• Saves multiple copies of calibrations for backup.
  Stock calibration and tuning calibration are stored on both the PC and the interface for safe keeping.
• Up to 8 hours of data collection
  Interface allows for up to 8 hours of data collection while riding the bike for fine tuning with real street data, or to find that one trouble spot that only happens on the highway.
• Maximum speed limit for all calibrations.
  All supplied calibrations have the Max. Vehicle Speed Limit raised to 168 MPH standard.
• Real Time Cell Trackers
  MasterTune/DataMaster Exclusive Real Time Cell Trackers when tuning VE, Spark, EGR, Torque tables and more!

Download the latest software to get started tuning your 2021 H-D motorcycle today!

Calibrations are now available for ALL 2020 Harley-Davidson models, including traction control models.

New versions of MasterTune2, DataMaster2, and VTune3 have been released. Download the software to get started tuning your 2020 H-D motorcycle today!

With the new release of MasterTune2 v4.5.7, DataMaster2 v4.1.3, and VTune3 v3.7.5, the TTS MasterTune software now supports ALL 2020 Harley-Davidson models.

Calibrations are available for all non traction control models, touring included. Traction control calibrations are undergoing testing now and will be available shortly.

Download the software and get started with your tuning today!

The TTS suite of tuning software now supports H-D 2020 Softail, Street, and XL models. 2020 Touring calibrations are undergoing testing now and will be available shortly.

TTS MasterTune is the premier EFI tuning product for Harley-Davidson motorcycles. Year after year TTS gets the new product to market ahead of all competitors.

All TTS tuning software is free to download and try out. If you want the best possible tune for your Harley Davidson vehicle, contact your local dealer to purchase MasterTune today.