September 19, 2016

RENNtech boosts V8-550 BiTurbo Series to new Heights

RENNtech boosts V8-550

BiTurbo Series to new Heights

With the newest update of their Software Upgrade for the M278 – 4.7L V8 BiTurbo, RENNtech boosts the 550-Series to AMG Power Levels.

The RENNtech upgraded M278 now produces 540 HP and 705 LB-FT at crank. Compared to power numbers by Mercedes-Benz, the 550 gains up to 138 HP and 262 LB-FT. This Software update delivers up to 10 HP and 99 LB-FT more than the previous version.

The vast amount of increased torque across the entire RPM range gives the 550 an extra edge to compete with AMG powered vehicles. All this without sacrificing around town comfort and daily driver reliability.

The M278 – 550 engine is currently offered for the W222 – S Class, C217 – S Coupé/Cabriolet, C207 – E Coupé/Cabriolet, C218 – CLS Class, X166 – GLS SUV and R231 – SL Class.

The updated RENNtech software will also be shipped for the discontinued models, the W221 – S Class, W212 – E Class, C216 – CL Class, W166 – ML Class and X166 – GL Class.

In addition to the updated ECU Upgrade, RENNtech is releasing the all new ‘RENNtech 550 Sport Package’. Included in this all-around transformation package are ECU-Upgrade, Carbon-Fiber Decklid Spoiler and Stainless Steel Sport Mufflers. Optional are your choice of RENNtech Deep Monolite Wheels in Brushed Aluminum or Gunmetal. Currently available for select models.

550 – M278 | 4.7L V8 BiTurbo Stock Performance:
+W212-E, C207-E, C218-CLS
Rated by Mercedes-Benz:      402 HP @ 5,000-5,750 RPM  |  443 LB-FT @ 1,600-4,750 RPM
Rated by RENNtech:               435 HP @ 4,900 RPM  |  508 LB-FT @ 2,350-3,650 RPM

*W222-S, C217-S, R231-SL, C216-CL
Rated by Mercedes-Benz:      449 HP @ 5,250-5,550 RPM  |  516 LB-FT @ 1,800-3,500 RPM
Rated by RENNtech:               469 HP @ 4,900 RPM  |  563 LB-FT @ 2,350-3,650 RPM

550 – M278 | 4.7L V8 BiTurbo RENNtech Upgraded Performance:
*Applies to all Models, crank power calculation based on 17% Drivetrain loss on 4-MATIC models and 14% Drivetrain loss on RWD models
Rated by RENNtech:               540 HP @ 4,500 RPM  |  705 LB-FT @ 2,850-3,450 RPM

Check our website for more information. Click here.

July 11, 2016

RENNtech | SupercarsOfLondon | R1 AMG GT-S

The #RedBeast Is Unleashed

RENNtech and Supercars Of London collaborated to unleash the real power of the Mercedes-Benz AMG GT-S.

Now equipped with the RENNtech R1 Package, the True Blood AMG GT-S produces 625 HP and 601 LB-FT. Powering the RENNtech R1 Performance Package are the ECU Upgrade, Stainless Steel Downpipes w/200 Cell Sport Catalytic Converters, Blow-Off Valve Adapters and High-Flow Air Filters.

Without further ado, turn your speakers up! Check out the following link for the official unveil video:

The transformation of the Red Beast has only just begun, stay tuned for more updates.

June 14, 2016

RENNtech | SLS AMG GT | Final Edition Roadster

Mercedes Benz
SLS AMG GT Final Edition Roadster
1 of 350
by RENNtech

603 HP| 510 LB-FT

(weight optimized and engineered specifically for the SLS AMG)

Style: 10.2 Super-Light 

Configuration: 1-piece
Finish: Brushed Gunmetal
Front: 19 x 9.5”
Rear: 20 x 11.0”

Wheel weight comparison:

Front: 20.6 lb | 24.5 lb
Rear: 22.8 lb | 29.0 lb
Front tire: 265/35/19
Rear tire: 335/25/20

June 3, 2016

RENNtech | S 63 AMG Coupé | Matte Black

Mercedes-Benz S 63 AMG Coupé RENNtech

708 HP | 839 LB-FT @Crank

Estimated Drivetrain Loss of 17%
588 whp | 697 wtq

ECU Upgrade

Downpipes w/200 Cell Cats
Sport Mufflers w/Electronic Valves
Prototype Decklid Spoiler

Dyno'd Friday June 3rd 2016
Stuart, Florida
90°F | 65% Humidity

May 27, 2016

Mercedes- Benz | S 550 | RENNtech | Aristocrat

Aristocrat Motors Mercedes-Benz S 550 
by RENNtech and Nitto Tire

530 HP | 606 LB-FT

ECU Upgrade
Carbon Fiber Decklid Spoiler

Lowering Links

Deep Monolite 16 Wheels
VIP | Limited Edition Finish | 1 of 25
Brushed Face w/Polished Windows
21" x 9.0" | 22" x 10.5"

Nitto Invo Tires | 245/35 R21 | 295/25 R22

April 26, 2016

Product Release | RENNtech ECU Upgrade | W205 C 63 AMG | 601 HP / 657 LB-FT

RENNtech ECU Upgrade
W205 C 63 AMG | 601 HP / 657 LB-FT

After months of development and testing in the US and on the Nürburgring in Germany, we are pleased to announce the release of our newest ECU Upgrade: The RENNtech direct ECU flash for the W205 - C 63 AMG. 

RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s! Our experience, countless hours of in-house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability.

RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the vehicles entire power band. By modifying ignition timing and throttle mapping, optimizing air-to-fuel ratios, increasing the engine's rev limiter and modifying boost mapping for turbo-charged vehicles, RENNtech performance software unleashes the true potential of your Mercedes.

With the proprietary RENNtech ECU Tuning the W205 - C 63 AMG gains up to +56 HP and +107 LB-FT, based on power numbers measured by RENNtech. Please note that the Mercedes M177 engine performance when measured, obtains higher numbers than rated from factory. The maximum power number reached with the RENNtech ECU Upgrade for the W205 - C 63 AMG is 601 HP and 657 LB-FT.

For detailed information about our ECU Upgrades feel free to email us at or call our sales-team under 561.845.7888.

C 63 AMG S (W205 | M177 | 4.0L V8 BiTurbo) Stock Performance: 
  • Rated by Mercedes-Benz: 503 HP @ 5,500-6,250 rpm; 516 LB-FT @ 1,750-4,500 rpm 
  • Rated by RENNtech: 545 HP @ 6,150 RPM; 550 LB-FT @ 3,700-4,700 RPM 
  • Mercedes M178 engine performance when measured, obtains higher power numbers than rated from factory.
C 63 AMG S (W205 | M177 | 4.0L V8 BiTurbo) Modified Performance:
  • 601 HP @ 5,650 RPM; 657 LB-FT @ 4,250-4,800 RPM

March 15, 2016

Product Release | W463 | G-Wagon | Performance Shocks | 2nd Generation

RENNtech | W463 | G-Wagon | Performance Shocks | 2nd Generation

We are proud to announce the release of our second generation G-Wagon performance shock system. As any G-Wagon owner knows, the vehicle is an incredible off-road machine, but suffers from a less than comfortable ride and lack luster handling when spending its time on-road. Our brand new, completely re-engineered suspension system is unlike anything else currently on the market for the G-Wagen.

RENNtech has found the perfect balance between on-road comfort and off-road performance with our specially designed shocks exclusively for the G-Wagon. These shocks dramatically improve the daily driving comfort and handling around town without sacrificing durability.

Our performance shocks feature precision, six way adjustable compression, offering a wider range of adjustment and optimal vehicle ride quality. The turn of the dial on the externally mounted reservoir instantly adjusts ride quality to suit your individual preferences or performance needs.

Our high performance shocks are constructed of an aircraft grade aluminum body and alloy steel shaft for reliability in the most demanding of driving environments. An externally mounted reservoir makes shock dampening changes extremely easy and does not require the use of any tools or a lift.

The full set is priced at $4,880.

Click here for RENNtech Product Page
  • Includes 2 front and 2 rear shocks
  • Precision six way adjustable compression adjustment
  • Allows for a more comfortable adjustment
  • External reservoir
  • Increased reliability and service life


  • 463 - G 500
  • 463 - G 550
  • 463 - G 55 AMG
  • 463 - G 55 AMG Kompressor
  • 463 - G 63 AMG
  • 463 - G 65 AMG