Includes Upgraded Turbos, ECU Upgrade, Downpipes, Performance Clutch, TCU Tune, BOV Adapters, BMC Air Filters. Gains: Up to +321 HP | +185 LB-FT

Powered by RENNtech’s R3 Performance package the 2021 AMG GT Black Series generates 1066 horsepower and 831 lb-ft of torque resulting in the most powerful vehicle developed by RENNtech and the most powerful street legal AMG in the World.

Measured on RENNtech’s in-house DYNO the R3 -upgrade increases the power output to 938 WHP and 731 WTQ, the AMG GT Black Series gains up to 282 WHP and 163 WTQ over the DYNO measured stock figure of 656 WHP 568 WTQ. RENNtech was able to significantly increase the area under the curve, especially in the most important rpm range between 5,500RPM and 7,000RPM with peak gains of +321 HP and +185 LB-FT. The R3 Performance Package was developed and tested running on standard 93 octane gas, adding convenience for track and street driving.

Engineered for the M178 BiTurbo LS2 V8 powerplant found in the AMG GT Black Series, the R3 upgrade includes RENNtech Stage II Turbo’s, ECU+ programming, Stainless Steel Downpipes with 200 cell catalytic converters, TCU tune, Performance Clutch, Blow Off Valves, and BMC Air Filters.

Turbo Upgrade with lightweight forged billet turbo wheel features a dramatically larger-than stock impeller (inlet side) and an increase in the turbine trim (exhaust side). The combination of high quality, lightweight components compensates for turbo lag despite being a functionally much larger turbo. The cartridge supporting shaft is both larger and stronger designed to handle the larger wheel and additional power, and the cartridge is balanced as a complete assembly to safely allow for these increases. The impeller and turbine housings are then precision CNC machined and flow tested in-house to fit the larger internal cartridge. With this RENNtech was able to significantly increase the area under the curve, especially in the most important rpm range between 5,500RPM and 7,000RPM with peak gains of +321 HP and +185 LB-FT.

More power isn’t the only performance benefit as our turbos spool quicker, offer a more responsive throttle and immediate power delivery thanks to a reduction in exhaust back pressure, rolling resistance, higher RPM's and a lighter rotating mass. In addition, our turbo upgrade kit functions with the OEM oil and coolant lines.

Larger Lightweight forged billet inducer and exducer wheels
Cartridge shaft is larger and stronger to support larger wheel
Entire cartridge is fine balanced as an assembly
Less rolling resistance offers quicker spooling
Virtually no lag with impressive throttle response
Precision machined impeller and turbine housings

Transmission Control Unit (TCU) -upgrade is engineered for faster and more firm shifts while increasing the torque capacity of the AMG SPEEDSHIFT DCT 7G transmission. RENNtech TCU upgrade is optimized for faster acceleration by matching the power output of our ECU and Turbo upgrades. Combined with RENNtech's Performance Clutch upgrade results in a smoother driving experience under normal conditions, while performance driving becomes more effective with increased torque capacity, and faster shifting times.

Increased Clutch Torque Limits
Increased Clutch Pressure
Optimized WOT and Part Throttle maps
Faster shift times

Key Features:

The RENNtech R3 Performance Package includes:
- RENNtech Turbo Upgrade
- RENNtech ECU+ Upgrade
- RENNtech Stainless Steel Downpipes w/200 Cell Catalytic Converters
- RENNtech Transmission Control Unit (TCU) upgrade
- RENNtech Performance Clutch
- BMC Air Filters
- RENNtech Blow Off Valve Adapter
- Up to 1,066 HP and 831 LB-FT @ crank with 93 Octane Fuel

Disclaimer: With performance tunes over 850HP, it is strongly recommended to replace the existing connecting rods to RENNtech's improved and stronger version to protect against engine failure.

Notes:

We have found the M178 engine stock performance numbers vary from the baseline figures claimed by Mercedes-Benz. We typically see higher baseline numbers than claimed by the factory.
Power gains are calculated based on stock numbers measured by RENNtech. Crank Performance Numbers are calculated with a 12% Drivetrain loss on RWD vehicles.
RENNtech Downpipes, Air Filter and BOV Adapters are required to reach full power output level.
Numbers published by MBUSA are an average over a 750 rpm range for HP and a 2,000rpm range for TQ. Power gains are calculated based on the peak stock performance measured by RENNtech.
Our numbers will be dependent on conditions and fuel quality. 93+ Octane gasoline is mandatory with this Performance Upgrade.
States known for poor fuel quality have to be supplied with a lower power setup. Please call for details and Race fuel options +1-561-845-7888.

Performance Tests:

Vehicle	Upgrades	0-60mph	0-100mph	60-130mph	1/4 Mile ET	Trap Speed
C190 - AMG GT Black Series	Stock w/o Launch Control	3.0 sec	6.98 sec	8.65 sec	11.15 sec	127 mph
C190 - AMG GT Black Series	Rt ECU Upgrade w/Launch Control	2.70 sec	6.61 sec	7.86 sec	10.62 sec	131 mph
C190 - AMG GT Black Series	Rt Stage I Turbo Upgrade w/Launch Control	2.59 sec	6.11sec	7.39 sec	10.39 sec	133 mph

*If not otherwise noted, performed on non-prepped asphalt and with OEM, Street-Legal and/or Non-Performance tires. Data measured with Racelogic Performance Box.

Performance Numbers Overview

AMG GT Black Series (MY 2021) | C190 | M178 | 4.0L V8 BiTurbo Stock Performance (at crank):

Rated by Mercedes-Benz (avg.): 720 HP @ 6,700 rpm; 590 LB-FT @ 2,000 rpm
Dyno measured by RENNtech (avg.): 745 HP @ 6,700 rpm; 645LB-FT @ 2,000 rpm (CONFIRM)
Dyno measured by RENNtech (peak): 745 HP @ 6,700 rpm; 645LB-FT @ 2,000 rpm
- Note: Mercedes M178 engine performance when measured on the dyno obtains higher power numbers than rated from factory. Performance numbers published by MBUSA are a calculated average within a specific rpm range, which obviously result in lower power numbers than at the peak. HP and TQ gains calculated by RENNtech are always based on peak stock results measured by RENNtech and upgraded peak results measured by RENNtech.
- For transparency and comparability, RENNtech published the average stock power during the rpm range set by MBUSA and the peak stock performance

AMG GT Black Series (MY2021) | C190 | M178 | 4.0L V8 BiTurbo Modified Performance (at crank):

Rated by RENNtech (peak @crank): 1,066 HP @ 6,200rpm; 831 LB-FT @ 6,800 rpm
Rated by RENNtech (peak @wheel): 938 whp @ 6,200rpm; 731 wtq @ 6,800 rpm

Crank Performance Numbers are calculated with a 12% Drivetrain loss on rear wheel drive vehicles.

For detailed explanation on crank HP, wheel HP, drivetrain loss, etc. please click here.

Dyno-Graph for Performance measured at the wheels:

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