The Weistec M178 W.3 Turbo Upgrade unlocks the true potential of the 4.0L Biturbo engine. Power gains are substantial, especially in the top end.

The factory turbocharges are disassembled and fully inspected. The compressor cover and center cartridge are then machined to accept our 5-axis CNC machined 65mm impeller wheel. Externally, no changes are made to maintain a completely stock appearance. The new impeller wheel supports greater power levels than the factory unit with little to no sacrifice in spool and response. The turbochargers are then reassembled with new seals and fully balanced for smooth operation and OEM service life. All the original oil and coolant lines bolt right up making for a simple install.

For maximum results, the combination of our Weistec Downpipes, and Weistec High Flow Air Filters are recommended. A Weistec W.3 Turbo Specific ECU Upgrade is recommended. 

You may also be interested in the optional Weistec Mercedes-Benz M178 W.2 ECU Tune (C190 AMG GT, GT S & GT R) and Weistec Mercedes-Benz M178 Water-Methanol Injection System (C190 AMG GT, GT S & GT R).

• 5 Axis CNC Machined
  
• High RPM Balanced for perfect operation
  
• Substantial power throughout the RPM range
  
• Rev Limit increased to 7500 RPM (on compatible models with tuning)
  
• Stock Appearance when installed
  
• 100% Bolt on installation
  
• Requires your turbos to be sent to Weistec
  
• Core Exchange optional

Specifications

• Weistec Horsepower: 765 HP (+309 HP)
• Weistec Torque: 683 TQ (+240 TQ)

• Mercedes-Benz C190 AMG GT M178 Bi-turbo 4L V8 (2015+)
• Mercedes-Benz C190 AMG GT S M178 Bi-turbo 4L V8 (2016+)
• Mercedes-Benz C190 AMG GT C M178 Bi-turbo 4L V8 (2016+)
  
• Mercedes-Benz C190 AMG GT R M178 Bi-turbo 4L V8 (2017+) 

01-178-01609-3

Manufactured by

Weistec