Comprehensive Turbo Upgrade
The Weistec Engineering M177 / M178 W.4 Turbo Upgrade is the key to making the most power with the M177 and M178 engines without compromise in drivability or reliability.
The turbo upgrade, as with all W.4 Upgrades, is a comprehensive turbo upgrade that completely replaces the factory turbochargers. The new turbochargers are ball bearing units with CNC-machined billet aluminum compressor wheels rated much higher than the stock units. The Weistec compressor covers provide mounting for the OEM wastegate actuators and is compatible with the stock charge piping. A 3-inch anti-surge inlet is standard to provide unrestricted flow to the compressor.
The Weistec Turbine Housings have V-Band inlets to allow for a cleaner and easier install, and turbine outlets that not only match the factory location, but also have the same flange design to use the same Weistec Downpipes and Midpipes as the stock turbos.
Key Features
- Twin Ball Bearing Turbochargers
- Increased compressor air flow
- Weistec M177/M178 Compressor Covers
- Weistec Cast Stainless Steel M177/M178 Turbine Housings
- Custom Turbo Coolant Lines and Fittings
- Custom Turbo Oil Lines and Fittings
- Weistec Turbo Intake Couplers
- Bolt on installation
- All hardware and gaskets are included
- 900+HP Capable with supporting upgrades
- Designed to use Stock or Weistec Downpipes
- Compatible with Factory Downpipes
- Reuses Stock Wastegate Actuators
- No Core Charge
Supporting Upgrades
To push past 900 horsepower with the W.4 turbo upgrade, supporting mods aren't optional. They're essential. Each component is engineered to
work in sync with the W.4 system, ensuring maximum performance, reliability, and efficiency.
ECU tuning
(Required)
This is the most important supporting upgrade. Tuning your Engine Control Unit (ECU) is what brings all your performance upgrades together. It recalibrates the engine's
brain, optimizing fuel, boost, timing, and more to work seamlessly with your new performance upgrades.
Without it, the ECU will still try to run the engine like it's stock, which can limit power, cause drivability issues, or even damage components.
ECU tuning can be performed by your local trusted tuner or you can contact us
to see available tuning options.
Weistec CPC Module
(Required for newer models)
The Computer Powertrain Control (CPC) Module can be found in modern Mercedes vehicles. It is home to several torque limiters that used to be solely in the ECU.
The Weistec CPC module is a complete replacement for the factory CPC module, and it removes all torque limiters, allowing the engine to produce maximum power without restrictions.
In general, 2019+ Mercedes vehicles have the CPC module, but some older models with the 9G-Tronic transmission may also have it. Please contact
tuning@weistec.com to confirm if your vehicle has a CPC module.
See Product
Downpipes*
(Required)
Our downpipes are designed to increase exhaust flow, reduce back pressure, and improve turbo spool time. This results in increased horsepower and torque.
High-flow cats may also be used instead of downpipes, but they will not provide the same level of performance as downpipes.
See GLC63 Downpipes
See C63 Downpipes
Performance Spark Plugs
(Required)
Higher boost means more heat. Performance spark plugs dissipate heat more efficiently. This means better cooling and improved knock
resistance!
See Product
Water-Methanol Injection System
(Required)
High-performance engines run extremely hot. Water-Methanol Injection Systems provide cooling and boost octane. All this combined leads to
increased performance and knock resistance.
See Product
Carbon Fiber Airboxes
(Required)
More air flow. More Power! Our Carbon Airboxes increase filter surface area by 225% over OEM and are purpose-built to complement the W.4
turbo upgrade, maximizing intake efficiency.
See Product
Forged Pistons and Billet Rods
(Recommended)
Built from stronger materials than OEM, our forged pistons and billet rods are engineered to handle increased power and high boost,
ensuring greater engine strength, reliability, and safety under extreme conditions.
See Product
TCU tuning
(Required)
While this upgrade doesn't add any horsepower to your vehicle, it does make sure that your vehicle puts it down to the pavement as efficiently and
aggressively as possible. Our Transmission Control Unit (TCU) tuning increases line pressure, resulting in faster shifts, reduced slipping, and increased torque capacity.
See 7 speed TCU Tuning
See 9 speed TCU Tuning
*Weistec Downpipes are not for sale in the United States.
Vehicle fitment
- 2015-2023 Mercedes-Benz C63 AMG S Base
- 2015-2023 Mercedes-Benz C63 AMG S Coupe
- 2015-2023 Mercedes-Benz C63 AMG Base
- 2015-2023 Mercedes-Benz C63 AMG Coupe
- 2015-2023 Mercedes-Benz C63 AMG T-Modell
- 2016-2023 Mercedes-Benz C63 AMG Cabriolet
- 2017-2022 Mercedes-Benz GLC63 AMG S Base
- 2017-2022 Mercedes-Benz GLC63 AMG S Coupe
- 2017-2022 Mercedes-Benz GLC63 AMG Base
- 2017-2022 Mercedes-Benz GLC63 AMG Coupe
- 2018-2023 Mercedes-Benz C63 AMG S Cabriolet
Installation manual
Weistec part number: 01-177-01550-7 · UPC: 810089560964
All products are shipped out from one of the Signature Autohaus shipping locations. Signature Autohaus drop ships some products and ships direct others. All products are shipped via FedEx, UPS, DHL or another qualified shipping carrier.
Special arrangements may need to be made for international orders and oversize packages.
In the event a product arrives damaged to your location, please follow the steps listed below. All damaged items must be reported to the shipping carrier immediately and you must notify Signature Autohaus within 5 days of receiving your order. If these steps are not followed, your shipment may not be able to be a candidate for a claim.
Complete the Shipping DAMAGE Claim Form by contacting the carrier that delivered your package.
1) Keep the product and its original packaging and box
Make a list of the damaged or lost item(s)
2) Signature Autohaus will contact the shipper once we receive the email info above to schedule a pickup, DO NOT send it back to us
3) Once the product is picked up and inspected by Signature Autohaus and or Supplier, a replacement or credit will be issued.
4) The Shipping Rates shown at time of checkout our dimensional rate only. If your shipment weight is to much then contact us for a shipping quote. If there is an error in the shipping rate quoted we will contact you and let you know of the changes. International orders(Outside the USA) are not automatically processed as we may require additional information from you.
If a product is ordered and not wanted, the UNUSED item can be returned for a 35% restocking fee. Shipping is not refundable in either direction. 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 Signature Autohaus warehouse are shipped via FedEx or Freight and require a signature when delivered. Some packages shipped from the manufacturer may or may not require signatures for package release. Fedex, UPS, and DHL have package pick up locations if you are unable to sign for the package. If the package is returned to Signature Autohaus or manufacturer, you will be responsible for the return shipping costs and pay a 35% restocking fee. These fees will be charged to your account on file.
SIGNATURE AUTOHAUS DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return, will not cover any expenses related to the product or installation, and you maybe be required to purchase a replacement.
In the event that the product you ordered is sent either incorrectly or processed wrong by Signature Autohaus, we will arrange for the package to come back to us and ship out a replacement. We will evaluate the situation before we determine the shipment was incorrect.
To return a item back to us, please do the following:
1. Contact our Customer Service Department to receive a RMA number. All packages returned without a Returned Merchandise Authorization number will be refused.
2. Package the item up in original packaging unless deemed unuseable
3. Include the UNUSED parts and any additional information that was included
4. Include a copy of your receipt
5. Write a brief description of the problem with the product
6. If you have a receipt for the return shipping include as well
7. We DO NOT accept any freight collect packages
8. Once we have received the above information we will notify you via email or phone and let you know the status.
