RennTech Performance ECU Upgrade For Mercedes-Benz C218 CLS550 - AutoTalent }
RennTech ECU Upgrade For Mercedes-Benz C218 CLS550 - AutoTalent }
RennTech Performance ECU Tuning For Mercedes-Benz C218 CLS550 - AutoTalent }
RennTech Performance ECU Tuning For Mercedes-Benz CLS550 - AutoTalent }
RennTech Engine Tuning For Mercedes-Benz C218 CLS550 - AutoTalent }
Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU...
Vendor: RennTech
SKU: 54.218.CLS550BT
Product Type: Performance
Regular price
$2,480.00
Regular price
Sale price
$2,480.00
Subtotal: $2,480.00
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Description:

RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. Our proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish.

RennTech proprietary ECU upgrade for the Mercedes M278 Biturbo engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. 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 up to 540 HP and 705 LB-FT at crank.

Compared to power numbers by Mercedes-Benz, the CLS 550 gains up to 105 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.

Attentions:

We have found the M278 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 14% Drivetrain loss on RWD vehicles

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

Features:

  • Gains up to +105HP / +262LB-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

      Stock Performance:

      • 402 HP @ 5,500rpm; 443 LB-FT @ 2,000-4,500rpm
      • 435 HP @ 5,500rpm; 443 LB-FT @2,800-3,900rpm

        Modified Performance:

        • 540 HP @ 5,500rpm; 705 LB-FT @ 3,700rpm

        Performance Graph:

        Vehicle Fitment:    

        • 2011 Mercedes-Benz C218 CLS 550 BiTurbo
        • 2012 Mercedes-Benz C218 CLS 550 BiTurbo
        • 2013 Mercedes-Benz C218 CLS 550 BiTurbo
        • 2014 Mercedes-Benz C218 CLS 550 BiTurbo

                                  Note:

                                  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.

                                    Call:
                                    Please reach out to us at (310) 231-0292 for sales inquiries if you are in the United States, Canada, Mexico.
                                    Email:
                                    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

                                    Shipping

                                    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.

                                    Fitment

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