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 Handheld | 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 without sacrificing refinement. 

• Improved Throttle Response
• Optimized Fuel, Spark, and Boost
  
• Significant 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
• Upgraded Spark Plugs Required for Best Results and Performance
• *Power gains vary based on the model, modifications, fuel, and running conditions.

Specifications

W.1 Stage 1 (Stock Vehicle)

• WEISTEC HORSEPOWER 730
  
• WEISTEC TORQUE 764
  
• MANUFACTURER WEISTEC
  
• STREET LEGAL IN ALL THE US STATES NO
  
• ENGINE FAMILY S63TU
  
• STOCK HORSEPOWER 635
  
• STOCK TORQUE 576 

W.2 Stage 2 (Race Exhaust Fitted)

• WEISTEC HORSEPOWER 761
  
• WEISTEC TORQUE 822
  
• MANUFACTURER WEISTEC
  
• STREET LEGAL IN ALL THE US STATES NO
  
• ENGINE FAMILY S63TU
  
• STOCK HORSEPOWER 635
  
• STOCK TORQUE 576 

BMW S63TU Engine

• BMW F10 M5 Saloon S63TU (2013+)
• BMW F12 M6 Convertible S63TU (2013+)
  
• BMW F13 M6 Coupe S63TU (2013+)
• BMW F85 X5 M S63TU (2017+)
  
• BMW F86 X6 M S63TU (2017+)

05-563-00069-4 (W.1 Stage 1 (Stock Vehicle))

05-563-00070-6 (W.2 Stage 2 (Race Exhaust Fitted))

Manufactured by

Weistec