Weistec S63 ECU Tune

Stage 1:POWER GAIN* +183 HP TORQUE GAIN* +208 TQ Stage 2 (Race Exhaust Fitted): POWER GAIN* +253 HP TORQUE GAIN* +268 TQ All 2020 models require bench flashing at this time. 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