That is impressive considering most tuners tend to deliver upgrades late (if at all), not early, and rarely on time. The Weistec W.3 turbo upgrade takes the M178 in the AMG GT S to 650 wheel horsepower and 557 lb-ft of wheel torque on 91 octane pump gas.
It is important to note these are pump gas figures as there is obviously more in the turbos. Keep in mind this is also on the stock transmission. The car also features Weistec's supplemental bolt on modifications.
Now this turbo upgrade system is employed on the M178 in the AMG GT S and Weistec's car at SEMA earlier this month already had this turbo upgrade on it. This upgrade will of course also be available for the M177 in the W205 C63 AMG and S models. As the transmission is an MCT and not DCT it will be interesting to see if the C63 makes more torque with this upgrade.
The power curve features spool like the stock turbos just with more torque everywhere. The upgrade is even a bolt on affair maintaining stock like appearance. AMG GT or C63 sleeper anyone?
At $12,499.99 it certainly is not cheap but considering this is an application that has undergone significant testing and is essentially OEM level in development using the factory oil and coolant lines it is well worth the money.
We can not wait to see what it does on the track and how much further Weistec will push the M178. Transmission upgrades are no doubt up next to handle even more torque on race gas.
- Up to 650 Wheel Horsepower with supporting upgrades
- 5 Axis CNC Machined
- High RPM Balanced for perfection operation
- Substantial gains in peak HP and top end
- Rev Limit for AMG GT / GTS increased to 7500 RPM
- Stock Appearance when installed
- 100% Bolt on installation
- ECU Calibration included
- All necessary hardware and gaskets are included
** Coming Soon for W205 C63 and C63S