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RENNtech R1 PKG | C190 | AMG GT R | 669HP/624LB-FT | 4.0L V8 BiTurbo | M178 | MY2018+

R1 includes: ECU Upgrade, BOV Adapters, High-Flow Air Filters and Stainless Steel Downpipes | Gains: +60HP; +83LB-FT
Retail price without tax: $8,580.00

The R1 performance package is the perfect entry level performance upgrade for the Mercedes-Benz 190 - AMG GT R. The R1 features our proprietary ECU tune for the new 4.0L V8 BiTurbo M178 Mercedes-AMG engine, which gains up to +60 HP and +83 LB-FT, based on power numbers measured by RENNtech.

In addition to our ECU tune, the R1 package comes with our stainless steel downpipes with 200 cell sport catalytic converters. Our downpipes are designed and manufactured at the RENNtech Headquarters in Stuart, Florida. RENNtech exhaust products are ceramic coated to reduce heat in the engine compartment as well as combat against thermal stress.

Also included in the R1 Performance Package for the 190 AMG GT R, are the RENNtech Blow-Off Valve Adapters and a set of two high-flow air filters for the M178 engine.

The R1 performance package increases performance to 669 hp and 624 lb/ft without sacrificing daily driver comfort or reliability.



  • RENNtech ECU Upgrade
  • RENNtech Stainless Steel Downpipes w/ 200 cell sport catalytic converters
  • RENNtech Blow-Off Valve Adapters
  • High-Flow Air Filter



  • 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 the AMG GT/S.
  • 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 Numbers Overview 


AMG GT R (MY2018+ | C190 | M178 | 4.0L V8 BiTurbo) Stock Performance (at crank):

  • Rated by Mercedes-Benz:      577 HP @ 6,250rpm; 516 LB-FT @ 1,900-5,000rpm
  • Rated by RENNtech:               609 HP @ 6,500rpm; 541 LB-FT @ 3,950rpm
    • Note: Mercedes M178 engine performance when measured, obtains higher power numbers than rated from factory.



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

  • Rated by RENNtech:              669 HP @ 6,200rpm; 624 LB-FT @ 3,950rpm
  •                                                     589 whp @ 6,200rpm; 549 wtq @ 3,950rpm
    • Crank Performance Numbers are calculated with a 12% Drivetrain loss on the AMG GT.


Contact us

7825 SW Ellipse Way, Stuart, FL 34997
(+1) 561 - 845 7888
Mon - Fri 9am - 6pm


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7825 SW Ellipse Way - Stuart, FL 34997
TEL: 561.845.7888 FAX: 561.845.6777 E-MAIL: