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ENGINEERING THE FUTURE OF PERFORMANCE ™
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S63TU ECU Tune
Purchase S63TU ECU Tune
  • SKU: S63TU-ECU-Tune

    S63TU ECU Tune

  • Gains are at the engine or "crank". Actual gains are dependent on the model, model year, fuel octane, engine health, and environmental conditions. Learn More

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  • $1,199.99 $1,079.99

    Black Friday 2019 Software 10%: $120.00

  • Prop 65 warning
    Warning

    This product can expose you to chemicals including carbon black, silica - crystalline, formaldehyde, and lead which are known to the State of California to cause cancer, and lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Weistec Horsepower 730
Weistec Torque 710
Manufacturer Weistec
Street legal in all the US States No
Engine Family S63tu
Stock Horsepower 547
See more
year make model trim engine
2017 BMW X6 M 8AT (F16) Twin Turbo 4.4L V8 (S63)
2016 BMW X6 M 8AT (F16) Twin Turbo 4.4L V8 (S63)
2015 BMW X6 M 8AT (F16) Twin Turbo 4.4L V8 (S63)
2017 BMW X5 M 8AT (F15) Twin Turbo 4.4L V8 (S63)
2016 BMW X5 M 8AT (F15) Twin Turbo 4.4L V8 (S63)
2015 BMW X5 M 8AT (F15) Twin Turbo 4.4L V8 (S63)
See more

ECU Tuning Process: How do I get my ECU tuned?

The Weistec S63TU tune provides solid gains through out the entire powerband, This is on a vehicle with stock exhaust and turbos.  Additional upgrades will result in even more power.

 

Weistec S63TU ECU Power 

 

In addition to the performance gains, there are a couple options available for race vehicles.  First is the "Burble".  The M4 GTS comes from the factory with this in a mild form.  You can choose "Off" "Mild" or "Aggressive" for the "Burble".  Many seem to prefer aggressive, but we gladly will let you choose based on your preference.

The other race vehicle option would be Catalyst Heating.  On race vehicles, many times the catalysts are removed.  In those cases, there is no need for the catalyst heating which would just be making excessive noise on a cold start of the race vehicle.  If you have a race vehicle with the catalysts removed, Catalyst Heating can be disabled.

 

Cypher | Powered by Weistec

The Cypher is an optional upgrade when purchasing a Weistec tune for your Fxx series BMW. Simply navigate our website to the tune you wish to purchase. On the tune's product page there will be a drop-down menu giving the option to add Cypher to your tune order. From there, the order is processed, and a Cypher tool will be shipped to you

  • No need to send in your ECU / DME computer
  • Swap tunes file or return the stock within minutes.

  Weistec S63TU ECU Power 

What does all this mean to you?  More power, sharper throttle response, and consistent performance with out sacrificing refinement. 

ECU Tuning Process: How do I get my ECU tuned?

Key Features:

  • Improved Throttle Response

  • Optimized Fuel, Spark, and Boost

  • Signifigant wheel horsepower and torque gains through the whole power band

  • M4 GTS "Burble" Mild and Aggressive Options (for Race Vehicles only)

  • Disabled Cold Start (for Race Vehicles only)

  • Disabled Speed Limiter