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RennTech R1 Performance Ecu Upgrade For Mercedes-Benz X166 GLS 63 AMG Biturbo - AutoTalent }
RennTech R1 Performance Ecu Upgrade For Mercedes-Benz X166 GLS 63 AMG Biturbo - AutoTalent }
RennTech R1 Performance Diverter Valve For Mercedes-Benz X166 GLS 63 AMG Biturbo - AutoTalent }
RennTech R1 Performance Diverter Valve For Mercedes-Benz GLS 63 AMG Biturbo - AutoTalent }
RennTech R1 Performance Air Filter For Mercedes-Benz X166 GLS 63 AMG Biturbo - AutoTalent }
Description: The RennTech R1 Performance Package is the perfect entry level performance upgrade for the E 63 AMG....
Vendor: RennTech
Product Type: Performance
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Subtotal: $3,880.00
RennTech R1 Performance Package For Mercedes-Benz X166 GLS 63 AMG Biturbo
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The RennTech R1 Performance Package is the perfect entry level performance upgrade for the E 63 AMG. With the combination of the RennTech ECU Upgrade and the latest, 3rd generation Diverter Valve RennTech is able to add up to 91 HP and 175 LB-FT to the 5.5L V8 BiTurbo engine (compared to RennTech rated stock performance). The addition of the upgraded diverter valve helps the engine to handle boost spikes in high boost pressure applications better. A surplus of boost will be released to the atmosphere and the turbocharger can be supplied with air quicker after the shifting process. This helps to eliminate the 'Turbo Lag'.

The R1 performance package increases performance to 696 hp and 801 lb/ft at the crank, without sacrificing daily driver comfort or reliability and offer huge gains across the entire RPM range. Due to increased power and boost levels, 93 Octane or higher gasoline has to be used with R1 upgraded RennTech vehicles to avoid damage to the engine. States known for poor fuel quality have to be supplied with a lower power setup. Please call for details and Race Fuel options.


The R1 Pkg requires an additional core charge, which will be credited upon return of OEM turbo tubes to RENNtech. The tubes have to be returned in good condition. Deep scratches and dents will void the credit.

We have found the M157 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 18% Drivetrain loss on SUVs.

Our numbers will be dependend on conditions and fuel quality. 93+ Octane gasoline is mandatory with this Performance Package.

States known for poor fuel quality have to be supplied with a lower power setup


  • Gains up to  +91HP; +175LB-FT
  • Long-lasting and driver reliability
  • Significant gains in horsepower
  • Increases the performance
  • Significant gains torque 
  • Increasing the engine's rev limiter
  • Incredible performance gains
  • RennTech ECU Upgrade
  • RennTech 3rd Gen. Diverter Valve
  • BMC High-Flow Air Filters

Stock Performance:

  • 577 HP @ 5,500rpm; 561 LB-FT @ 2,000-4,500rpm
  • 605 HP @ 5,500rpm; 626 LB-FT @2,800-3,900rpm

Modified Performance:

  • 696 HP @ 5,500rpm; 801 LB-FT @ 3,700rpm
  • 571 awhp @ 5,500rpm; 657 awtq @ 3,700rpm

Vehicle Fitment:    

  • 2016 Mercedes-Benz X166 GLS 63 AMG Biturbo
  • 2017 Mercedes-Benz X166 GLS 63 AMG Biturbo
  • 2018 Mercedes-Benz X166 GLS 63 AMG Biturbo
  • 2019 Mercedes-Benz X166 GLS 63 AMG Biturbo
  • 2020 Mercedes-Benz X166 GLS 63 AMG Biturbo


                            Images are for representation purpose only and may differ depending on application.

                              If you have any fitment questions, please feel free to reach out to our team via the contact methods below. If you are contacting us for any order status updates, please give us a call, or email us. We are a lean operation bringing you the best shopping experience possible. We are working on your orders as quickly as we can. We thank you for your patience.

                              Please reach out to us at (310) 231-0292 for sales inquiries if you are in the United States, Canada, Mexico.
                              For more in-depth product questions, fitment questions, product inquiries please email our performance specialists at online@autotalent.com.
                              All other inquiries:
                              Please direct your inquiries to the chat functionality on our website.

                              Returns Policy

                              If a product is ordered and not wanted, the UNUSED item can be returned for a 25% restocking fee unless otherwise specified. In some cases, we may offer the ability to return the item to us for a lesser restocking fee and then keep the balance as a store credit. To return an item, it must be in brand new condition with original packaging.

                              We cannot accept a return on special ordered or custom items.

                              Shipping is non refundable in either direction unless approved by AutoTalent. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the AutoTalent facility are shipped via FedEx, USPS, or USPS. Some packages shipped from the manufacturer may or may not require signatures for package release.

                              Special Order Items

                              Some items may be special order specifically for the customer’s vehicle. These items generally require a deposit or paid in full. Once this deposit amount is notified to the customer and they agree to order the special order item, the deposit becomes non-refundable. These special order items cannot be returned or resold. Cancellations are not allowed on special order parts.

                              AutoTalent DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return. We will not cover any expenses related to the product or installation, and you may be required to purchase a replacement.

                              ** All cancellations that are requested that are NOT due to items not being in stock or delayed by the manufacturer are subject to a 5% processing fee. When you place an order with us we pay credit card fees that are NOT returned back to us. We will absorb these fees if we do not have the item in stock OR if you agree to the original ETA and that ETA is NOT met. If you decide to cancel for any other reason you will not receive this 5% fee back


                              We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

                              When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

                              Please also note that the shipping rates for many items we sell are weight-based.

                              Learn more about our Price match policy

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