June 25, 2024

Exploring the Power and Performance of the RENNtech Power Module (RPM) ECU Tune and Exhaust Valve Module (EVM) in the Audi RS Q8.

The Audi RS Q8 is a symbol of versatile luxury, effortlessly combining the high-speed thrill of a sports car with the practicality of an SUV. This high-performance vehicle stands out not only for its advanced technology and luxurious spacious interior but also for its practicality and competitive pricing. As a result, it has become a strong contender in the high-performance luxury SUV segment and a favorite among enthusiasts. 

But what if there was a way to further enhance the performance and power of the Audi RS Q8? Thanks to the RENNtech Power Module (RPM) ECU tuner, this is not just a dream, but a reality.

RENNtech Power Module (RPM) ECU tune is an engineered solution designed to boost the horsepower and torque across the entire power band for smooth power delivery. Specifically designed for the twin-turbocharged 4.0-liter V8 engine found in the Audi RS6, RS7, and RSQ8, the RPM tune delivers an impressive increase of up to +80 HP and 106 LB-FT of torque. Turning up the stock performance from 592 HP and 590 LB-FT into 672 HP 696 LB-FT!

The RPM ECU tuner increases power by optimizing engine dynamics through ignition timing, throttle mapping, air-to-fuel ratios, and turbocharger boost mapping, the result is a more responsive and powerful drive. 

RENNtech Power Module is encased in a CNC machined 6061 aluminum case, ensuring long-lasting durability, the module also features user-friendly installation with pre-labeled wires and connectors for easy setup. Further adding to its convenience is the inclusion of a bypass module that allows for a quick reversion back to stock settings. Also, the harness can be uninstalled to return the vehicle to its original condition.

Unlock Your Vehicle's True Sound with RENNtech's Exhaust Valve Module (EVM)

The RENNtech Exhaust Valve Module (EVM) is designed to give Audi RS Q8 owners complete control over their vehicle's exhaust sound, and is the the perfect complement to the RPM ECU Tune. Regardless of speed, RPM, or driving mode the EVM fully opens the factory exhaust valves with the push of a button on the remote. Button 2 reverts the system back to factory settings.

The EVM offers the following key benefits:

  • Independent activation regardless of drive mode: The EVM overrides factory settings, giving the driver full control over the exhaust valves' position.

  • No interference with CAN-Bus or control units: The EVM operates independently, ensuring that software updates don't affect its functionality.

  • Easy installation and fully reversible: The EVM's model-specific wiring harness requires no wire cutting, allowing for easy installation and a fully reversible setup.

The EVM is available for the Audi RS4 (B9), Audi RS5 (F5 B9), Audi RS6 (C8 4K), Audi RS7 (C8 4K) and Audi RS Q8. 

By combining the RENNtech RPM ECU tune and Exhaust Valve Module, Audi RS Q8 owners can unlock the vehicle's full performance potential while also gaining superior control over the exhaust sound. Both products are designed to deliver exceptional quality, performance, and reliability, making them an ideal choice for luxury SUV enthusiasts - and is backed by RENNtech’s top notch quality and customer service gained form 30 years of leading the automotive aftermarket.

Elevate your driving experience with the RENNtech Power Module ECU tune and the RENNtech Exhaust Valve Module. Transform your Audi's performance and feel the difference in every drive.

 For more information or to place an order, visit the RENNtech website or contact the sales team.

June 18, 2024

A Game-Changer for Family Haulers:

    When you think of family haulers, the term high performance might not be the first thing that comes to mind. Typically, these vehicles prioritize space and comfort over thrilling speed and agility. However, the GL 63 AMG may count as an exception. The GL 63 AMG in stock form is an impressive piece of machinery, but when paired with RENNtech upgrades, it transforms into a SUV that redefines the capabilities of a heavy-weight family vehicle.

    A testament to all out performance engineering, the M157 V8 BiTurbo engine a infuses daily driving with a pleasing rumble of a big V8 —turning school drop off's and office runs into more than just driving.

RENNtech HHT Tuner box
  The RENNtech ECU+ Upgrade is the initial step for upgrading the GL 63 AMG. Increasing power by an impressive +95 HP and torque by +111 lb-ft, this upgrade lifts the vehicle's stock performance from 574 HP and 623 LB-FT to a remarkable 669 HP and 734 LB-FT. 

    The ECU+ Upgrade unlocks more of the M157's potential, ensuring the near 6000 lbs of Mercedes-Benz feels lighter on its feet. The Hand Held Tuner flashes RENNtech Developed tune to the engine's electronic control unit (ECU), with in 90 seconds. The same module can be used to flash the vehicle back to stock, whenever taking the vehicle in for service - or wanting a reminder on what stock feels like.

    This results in faster acceleration and a more responsive driving experience, improving the GL 63 AMG performance figures - from 0 - 60 and rolling 60 - 100 mph pulls.

    RENNtech's transmission software upgrade improves the transmission of the increased engine performance to the wheels. The Transmission upgrade results in enhanced shift response, optimized shift timing, and an ability to handle more torque, ensuring that the newfound power is efficiently transferred to the ground. This not only improves overall drivability but also significantly reduces 0-60 times.

    While performance is crucial, comfort and versatility are equally important for a family vehicle. The RENNtech V3 Digital Suspension Lowering Module addresses these aspects with finesse. Compatible with both Airmatic and ABC (Hydraulic) Suspensions, this module allows users to take control over the SUV's ride height, adjustable in precise 1mm increments. 

The speed-dependent lowering function returns the vehicle to its factory ride height at a pre-set speed, preserving comfort on long drives while maintaining a lowered stance at lower speeds. The best part? The installation is fully reversible, and no alignment is needed after lowering, ensuring the GL 63's long-term durability.

With RENNtech's suite of upgrades, makes the X166 -chassis GL 63 AMG a versatile powerhouse, ready to tackle any family adventure for many years to come. Whether it's grocery runs, school pickups, or weekend getaways, this SUV now offers the perfect blend of performance and style, combined with comfort and practicality that families crave.

Through RENNtech's commitment to excellence and precision engineering, turning your GL 63 AMG into the ultimate family hauler is just a click away; experience the thrill for yourself by exploring RENNtech's exclusive upgrades today!


June 6, 2024

RENNtech Extended Protection Plan Eliminates Factory Warranty Worries after Performance Tuning


Stop worrying about voiding your factory warranty.

RENNtech Mercedes, AMG, Aston Martin, and Sprinter tuning enthusiasts protect their investment with our Extended Protection Plan, and don’t worry that a dealer may deny factory warranty claims due to RENNtech performance upgrades. This transferrable, comprehensive service contract covers powertrain repairs for the duration of the factory 48-month/50,000-mile warranty after installation of our HHT, Stage I Turbo, or Stage II Turbo if Mercedes-Benz USA or its dealer denies warranty repairs due to these aftermarket modifications.*

Save money by purchasing a RENNtech Extended Protection Plan during the first 30 days of product purchase. You may purchase a plan later, but there will be a surcharge. The RENNtech Extended Protection Plan is only available for select Mercedes-Benz, Sprinter, and Aston Martin models. See if your vehicle qualifies and get a personalized quote now.


  • Does installation of RENNtech aftermarket parts and performance tuning void a factory warranty?
  • Why you shouldn’t count on the Magnuson-Moss Warranty Act to protect your investment.
  • Why you should choose RENNtech for your Mercedes-Benz tuning, not just any tuning shop.
* Get a quote to see complete RENNtech Extended Protection Plan Terms and Conditions

June 4, 2024

Dynamic Duo: Power-Packed Performance Upgrades for the CLK 63 Black Series & G-Wagon!

CLK 63 BS and G500.

Step into the world of uncompromised high-performance!

For those who own a CLK 63 Black Series or a G-Class, commanding attention on the road is second nature. 
Prepare to explore a new dimension of power, speed, and exhilaration – because with RENNtech, performance comes without compromise.

CLK 63 Black Series

CLK 63 BS.

The Mercedes-Benz CLK 63 AMG Black Series stands as a beacon of automotive excellence, with only 500 units ever crafted, ensuring its status as a coveted gem among enthusiasts and collectors worldwide. Despite its track-oriented engineering, this masterpiece maintains the hallmark luxury expected from Mercedes-Benz. From its commanding wide grille to the quad exhaust pipes and aggressive body lines, every detail of the CLK 63 Black Series exudes confidence and presence, turning heads wherever it roams. This limited-production vehicle embodies the perfect fusion of performance, exclusivity, and timeless design, making it an icon for generations to come. Every drive in a CLK 63 Black series feels like a symphony of adrenaline and precision engineering.

But what if you could take that experience to the next level? 

HHT Tune Box on top of CLK 63 BS Engine bay.

The RENNtech Hand Held ECU tuner redefines performance by adding an impressive +34 HP and +20 LB-FT of torque to the already powerful CLK. With initial figures standing at 500 horsepower and 465 lb-ft of torque, the RENNtech tune propels your driving adventure to unmatched levels, pushing the M156 to produce 534 horsepower and 485 lb-ft of torque. 

Unlock the entirety of sound and power with the RENNtech Stainless Steel Headers and Exhaust system and enjoy being able to listen to the enhancements delivered by the ECU tune. But that's not all, you can even enhance responsiveness and precision with RENNtechs Valve Body Upgrade providing seamless gear changes and a more dynamic driving experience, whether you're pushing the limits on a winding mountain road or cruising through city streets.

And let's not forget about the aesthetic upgrades – RENNtech's carbon fiber rear diffuser adds a touch of aggression and aerodynamic efficiency, ensuring your CLK Black Series stands out from the crowd in both looks and performance.

With RENNtech's upgrades, the CLK 63 Black Series transforms from a masterpiece of engineering into a true performance icon, ready to conquer any road with style and authority.



Instantly recognizable, the G-Wagon stands as one of the most iconic vehicles ever produced by Mercedes-Benz. With its distinctive boxy shape and rugged charm, this legendary SUV has captured the hearts of enthusiasts and adventurers around the globe. N
ow, imagine taking that iconic presence and elevating it to even greater heights with RENNtech's available upgrades for the G-Wagon.

Introducing RENNtech's Hand Held ECU tuner — a dynamic tool empowering you to unleash the complete capabilities of your G-Wagon's engine. Engineered with custom tuning options to elevate performance and improve drivability, this tuner places unprecedented control of your vehicle firmly in your hands. For G 500 owners, the HHT brings an extra +28 HP & 16 LB-FT of torque for a total of 320 HP and 355 LB-FT of torque.  

HHT tuner and Ohlins suspension box inside of the G500

Notice shocking results when paring RENNtechs Performance Shocks and Performance Brake Package that will complement the G-Wagon's rugged capabilities. Whether you're tackling tight corners or navigating challenging terrain, these upgrades ensure that your G-Wagon delivers maximum performance and control in any situation.

Why settle for ordinary when you can experience extraordinary? Upgrade any G-Wagon with RENNtech's exclusive lineup of performance-enhancing products and unleash the full potential of one of the most iconic SUVs on the planet.

Whether it's a G-Wagon or a CLK 63 Black Series, RENNtech carries a diverse inventory of performance upgrades that fulfill every car enthusiast's dreams. With a unceasing commitment to engineering excellence and a passion for pushing boundaries, RENNtech continues to redefine the automotive landscape, offering bespoke solutions that elevate the driving experience to unparalleled heights. So why settle for mediocrity when you can experience the extraordinary?

Becoming part of the RENNtech family means crafting the car of any car enthusiast's dreams. Begin your journey today.