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 info@renntechmercedes.com 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

February 15, 2016

Product Release | C190 – AMG GT-S | Stage I Turbo Upgrade | Coil-Over Suspension

RENNtech is proud to announce the release of their latest performance upgrades for the Mercedes-Benz C190 – AMG GT-S. The RENNtech Stage I Turbocharger Upgrade and Coil-Over Suspension are now available.
These performance products have endured thousands of test miles at both of RENNtech’s Headquarters in the United States and Germany. Now the Stage I turbo upgrade completed its final testing on the world’s most demanding race circuit, the Nürburgring-Nordschleife. The upgraded turbochargers for AMG’s 4.0L V8 BiTurbo engine feature lightweight billet compressor wheels and larger impellers. The compressor housings are precision CNC machined and flow tested to compensate for the increased impeller size. In combination with the R1 Performance Package, which includes Stainless Steel Downpipes w/ 200 Cell Catalytic Converters and High-Flow Air Filters, the RENNtech Stage I Turbo will add up to 180 HP and 161 LB-FT over measured stock performance. This brings the AMG GT-S power output up to 716 HP and 656 LB-FT.
Ensuring all the power from RENNtech’s performance upgrades is transmitted to the road, RENNtech developed a suspension kit to improve both vehicle handling and performance. The four-corner suspension kit allows full ride height adjustability and lowering of up to 1.5” for the front and rear. The combination of the RENNtech coil-over suspension with the OEM dampers gives the AMG GT-S performance handling without losing the daily-driver comfort and keeping the OEM electronic damper control retained.

The RENNtech Stage I Turbo Charger is available for $11,880. Price includes the required ECU Upgrade.

The RENNtech Coil-Over Suspension kit is available for $1,980.


February 1, 2016

RENNtech Strut Brace and Boost Pressure Gauge | CLA | A | GLA

RENNtech just released their Carbon Fiber Front Strut Brace and Boost Pressure Gauge.
Both parts fit the 45 AMG Line-Up. The 117 - CLA, 176 - A and 156 GLA.

The Boost pressure gauge offers direct visual indication of your CLA's turbo performance and available boost pressure. Our easy to ready, 67mm gauge faces features an attractive carbon composite look and mounts directly into your CLA dash without cutting or drilling. 
The gauge is available in both PSI and BAR readings with large, easy to read numbers in all lighting conditions and features a white illuminated background for low lighting.

The construction on the Carbon Fiber Strut BRace features include reinforced eight point mounting brackets made out of aluminium. The customized crossbar is made out of high-performance carbon fiber to minimize flexing between the vehicles strut towers. Titanium bolts are used to mount the Strut Brace to the top of the strut towers.

Product Page Boost Gauge
Product Page Strut Brace

January 19, 2016

RENNtech – R1 Performance Package for the C190 – AMG GT-S

RENNtech – R1 Performance Package 

for the C190 – AMG GT-S

RENNtech's R1 package for the Mercedes AMG GT-S features a host of performance enhancing products which take AMG’s hottest coupe to the next level. RENNtech's ECU tune increases output from the already potent 4.0L V8 BiTurbo M178 AMG engine allowing for an additional +65 HP and +110 LB-FT over stock performance numbers with the tune alone!

Coupled with the ECU tune, RENNtech's R1 package acts to improve intake and exhaust gas flow to maximize engine performance output. Incoming air flow is channeled through high flow sport air filters which improve performance across the entire RPM range. On the exhaust side, RENNtech's ceramic coated stainless steel down tubes featuring high flow, 200 cell sport catalytic converters are utilized. The custom designed exhaust tubing maximizes turbine performance, improves exhaust gas flow and combats engine compartment temperatures.

The R1 performance package for the GT-S increases performance to an incredible combined peak output of 611 hp and 620 lb/ft all without sacrificing daily driver comfort or reliability.

January 6, 2016

Official Release | RENNtech E 63 AMG | Aerodynamics Program

RENNtech is proud to announce the official release of the carbon fiber aerodynamics program for the 212 – E 63 AMG FaceLift (MY2014+) Sedan and Wagon.

The Line-Up includes the carbon fiber front splitter with intergraded air ducts, priced at $2,950. The front splitter fits the E 63 AMG sedan and wagon. A carbon fiber rear deck-lid spoiler for all W212 – E Class Sedan models, beginning with MY2010, priced at $1,480. As well as a carbon fiber tailgate spoiler for all S212 – E Class Wagon models, beginning with MY 2012, priced at $1,640. Completing the program is the carbon fiber rear diffuser for the S212 – E 63 AMG FaceLift (MY2014+) Wagon, priced at $3,380. The carbon fiber rear diffuser includes our integrated CMC – Ceramic Matrix Composite exhaust tips. CMC exhaust tips are manufactured at over 2500°F to resist high exhaust temperatures.

All RENNtech aero products are manufactured of 100% pre-preg carbon fiber, to meet the highest OEM quality and fitment standards.

Pictures by William Stern

Direct Links to Product Pages:

Front Splitter | Sedan and Wagon

Denk-Lid Spoiler | Sedan
Tailgate Spoiler | Wagon
Diffuser w/ CMC Exhaust Tips | Wagon

October 30, 2015

RENNtech AMG GT | Project Car | 2015 SEMA Show

For the 2015 SEMA Show in Las Vegas, RENNtech will be featuring an all-new Project Car to stun the Mercedes-AMG Tuning Industry.  After winning the Mercedes-Benz Mission: Metris Van Challenge at the 2014 SEMA Show with their astonishing DJ Van, RENNtech now unveils their latest project car, the AMG GT.  Located in the Optima Alley, outside of the North Hall and competing in the annual Optima Ultimate Street Car Invitational, RENNtech plans to set yet another standard with their well-known R-Performance Line upgrades.  The R1, R2, and R3 performance packages are established as the perfect balance between performance and value to satisfy all customer desires.

The RENNtech AMG GT Project Car is equipped with newly developed performance upgrades such as; ECU Upgrade, Coil-over Suspension, Downpipes with Sport Cats, and much more.  For aerodynamic enhancements, RENNtech designed an all-around aerodynamic package, consisting of Splitter, Diffuser with Exhaust Tips, Rocker Panels and Adjustable DTM-Style Wing.  The AMG GT sits aggressively on a custom set of RENNtech 10 Super-Light 3-pc forged wheels, manufactured by ADV.1 Wheels.

This RENNtech AMG GT Project will give a hint at what to expect from RENNtech’s R-Performance Line regarding Mercedes-AMG’s newest supercar.  The research and development for this mind-blowing vehicle has just begun, but this teaser shows the potential of this car.

October 21, 2015

RENNtech CLA 45 AMG ECU Now Available

RENNtech is pleased to announce our proprietary ECU upgrade for the Mercedes M133 engine that offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. The end result is nothing short of spectacular with the RENNtech ECU upgrade making up to an incredible 428 HP and 417 TQ at the crank!

Our Piggyback is still available but now RENNtech is ready to tune your CLA 45. Tuning the ECU allows us to do a more complete modification of the vehicle’s performance including drivability adjustments, shift improvements, speed limits, torque control and response times.

This ECU Upgrade is also available for the 156 GLA and 176 - A Class.

CLA 45 AMG (C217 - M133 2.0L Engine) Stock Performance:

  • 355 hp @ 6,000 RPM; 332 lb-ft @ 2,250-5,000 RPM
  • Note: Mercedes M133 engine performance when measured obtains higher numbers that rated from factory.

CLA 45 AMG (C217 - M133 2.0L Engine) Modified Performance:

  • 428 hp @ 6,200 RPM; 417 lb-ft @ 4,300 RPM

For More Information Visit our PRODUCT PAGE

June 23, 2015

RENNtech and ADV.1 present the World’s First 10 second AMG GT-S

10.94 seconds @ 128 mph

Another successful collaboration between world renowned Mercedes-Benz Tuner RENNtech and Official Designer of the Wheel Industry, ADV.1 Wheels. 

This GT-S is equipped with the latest RENNtech ECU upgrade and Downpipes with Sport Cats, as well as ADV5.2 Track Spec CS wheels.

The 10.94s @ 128mph quarter mile pass was achieved at Palm Beach International Raceway on June 19th 2015. 

This marks just the beginning of the RENNtech tuning and performance development for the AMG GT-S. 

Stay tuned for more updates!

RENNtech | ADV.1 AMG GT-S 10 second quarter mile video.

Photo Credit:  William Stern Photography