Tuning for M2-M3-M4-M5-M8 X3M X4M and Supra

Welcome to STS Tuning

You know the feeling—when a shift hits just right, torque delivers clean, and the whole car feels like it’s finally listening to you. That’s the sweet spot we chase every day at STS Tuning.

The software runs on a Windows laptop with Enet Cable.

Gives you access to a wide range of advanced functions.

ISN Reset.

Transmission Swap Coding Solutions (HP70) (HP76).

DME Flashing.

EGS/TCU Flashing (STS Tuning).

Hardware Version Updates (available when paired with my tuning).

Data Logging.

1) Here is the link to join under my account dashboard and purchase your license:

https://flash.1769.fi/signup?dealer=6087a83c-d6d1-…2) Each vehicle requires a $100 vin license, purchased directly through the 1769Flash platform. After you set up an account using the link I provided, enter your VIN, and you’ll see the option to purchase the license. Download the 1769Flash program.

3) Then you can start a tune project. You would then order the tuning from my website here

4) For M cars or Supra here

5) Once that is ordered, I will receive the order and send the tune to your 1769Flash account, then with the 1769Flash program, you can select the file to write to the EGS/TCU.

6) Very simple and straightforward, and seamless.

Tuning comes with 2 revisions, which must be done within the 2-week period of the purchase date. However, any customization beyond the 2-week period or 2 revisions is an additional charge (Which is considered Advanced Tuning). To discuss your specific tuning needs and receive a quote, please contact a STS tuning representative.

Full Custom Tuning ($450)

STS Tuning offers Full Custom Tuning—a fully personalized approach built from a base file tailored to your specific vehicle and modifications. This option is designed for high-performance builds (typically 900HP / 800TQ and above) or for track-focused setups such as drag racing, road course or time attack applications where precision and control are critical.

Due to the level of expertise and time involved, all Full Custom Tuning sessions must be completed within 4 weeks of the purchase date or upon reaching 6 revision files, whichever comes first.

Instructions for Using the 1769Flash program.

1) Download the 1769Flash program and verify the license code.

2) Connect to the vehicle to get the EGS/TCU ID information, which will show up on the account dashboard.

3) If the Software is an old version, an update may be performed.

4) Once tuning is purchased from STS.com the file will be uploaded to the 1769Flash account dashboard.

5) Use the 1769Flash, click on Write, then select the tune file from your list.

6) Once flashing is complete, turn of Ignition and you are ready to drive.

Required Equipment:

Windows Laptop with ENET to OBD cable
1769Flash plus license

Product Highlights:

Tuning for a superior driving experience.
Tune is customized for stock, hybrid, and single turbo vehicles.
Improved shifting in all modes, No jerky or harsh shifting.

Optimized TQ Management to recover power that would normally be lost during shifting.
Tuning allows for custom line and shift pressure for big HP power applications.
The Built transmission may require extra revisions to smooth out a harsh shift or two which is common.

Ease of Use:

For Power levels of 650hp to 750hp and higher I recommend getting a built transmission.
Flash program is the 1769Flash
Recommended to use with Adrenaline ATF SS fluid, Amsoil ATF Blue Cap or Motul ATF VI changing fluid every 30k to 40k miles on tuned vehicles

Tuning Adjustments

Shift timing
Shift pressures
Fill rates
TQ Limiters
TQ Management
Clutches
Shift RPM
TCC settings

Our 8HP transmission tuning is the product of extensive research and development, focusing on providing an exceptional driving experience without compromising on performance. Tuning and support does not carry over when the vehicle is sold.