For decades, Water/Methanol injection has been a trusted technique across various applications. Initially developed to reduce engine knock while boosting power in aircraft engines, this method quickly found its way into the motorsports world, proving to be a game-changer for turbocharged engines. The Weistec Water-Methanol Injection System is designed to provide remarkable cooling and knock prevention benefits, enhancing your engine's consistency and performance.
This innovative system comes equipped with a Water/Methanol Controller that includes a built-in MAP sensor. What sets it apart is its progressive controller, which gradually increases injection as boost builds. This means you get a smooth and seamless operation every time. Plus, the custom-designed and CNC machined billet aluminum Weistec Vacuum/Boost Adapter makes it simple to tap into the manifold for vacuum and boost readings, taking the guesswork out of installation.
The included Weistec Silicone Turbo Charge Pipes feature built-in ports for the Weistec Barbed Injector Body, allowing for the use of two injectors. This ensures uniform injection and cooling. When you combine the cooling effects of methanol with the knock resistance of water, you can expect significant gains in horsepower and torque, along with a reduced risk of heat soaking your intercooler system.
This system is a complete, bolt-on solution that requires no custom fabrication or complicated guesswork. Weistec has meticulously engineered many components of this system to guarantee a straightforward installation that universal kits often lack. The performance and consistency gains make this system a must-have upgrade for the M276 engine.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2015 Mercedes-Benz C400 |
C400 | 2015 |
|
2017-2020 Mercedes-Benz C43 AMG |
C43 AMG | 2017-2020 |
|
2015-2016 Mercedes-Benz CLS400 |
CLS400 | 2015-2016 |
|
2019 Mercedes-Benz E43 AMG |
E43 AMG | 2019 |
|
2015-2016 Mercedes-Benz GL450 |
GL450 | 2015-2016 |
|
2017 Mercedes-Benz GLC43 AMG |
GLC43 AMG | 2017 |
|
2016-2017 Mercedes-Benz GLE400 |
GLE400 | 2016-2017 |
|
2015-2019 Mercedes-Benz GLE43 AMG |
GLE43 AMG | 2015-2019 |
|
2015-2016 Mercedes-Benz SL400 |
SL400 | 2015-2016 |
|
2017 Mercedes-Benz SL450 |
SL450 | 2017 |
|
2017-2020 Mercedes-Benz SLC43 AMG |
SLC43 AMG | 2017-2020 |

Based out of Orange County, California, Weistec Engineering is an industry leader in research, development, and design. While the company was only established in late 2010, founder Michael Weiss and his partner Steve Atneyel both have an impressive track record of working with some of the fastest and most powerful vehicles in the world. The duo were both engineers for major American OEM and aftermarket performance companies; Michael was involved with advanced engineering, while Steve specialized in computer calibration.
Michael Weiss and Steve Atneyel decided to branch out on their own and combine their expertise and experience. The pair were, and still remain, avid Mercedes enthusiast and realized that there was a huge gap in the market for a company dedicated to engineering state-of-the-art performance systems for cars powered by motors like the M156 and M159 AMG. Since its inception over a decade ago, Weistec has grown to provide customers with the highest level of satisfaction and value through unyielding tests and continuous improvements in Mercedes products and performance.
What Does Weistec Offer?Engineering and design are the two core services of Weistec Engineering. The Weistec team offers an array of services and capabilities thanks to the team’s combined experience from multiple fields. Whether you have a new idea or are looking to improve an existing design, Weistec can bring your concept to reality while protecting your vehicle’s design form and engineering function. Services include CAD, CAM, rapid prototyping, CNC machining, laser cutting and etching, casting, plastic injection molding, 3D laser scanning, and much more.
Weistec Engineering also offers a comprehensive line of products to the import and exotic market, covering vehicles such as Mercedes-Benz, Audi, Pagani, Alfa Romeo, BMW, McLaren, Ford, Aston Martin, and Maserati. No matter what type of upgrade you are looking for, Weistec has something for everyone when it comes to performance products, suspension parts, electrical components, interior/exterior accessories, and wheels/tires.
Weistec Engineering keeps nearly every aspect of its production process in house to guarantee only the highest quality. From conceptual 3D designs to in-house manufacturing and, ultimately, road and track testing, Weistec boasts relentless attention to detail on everything it offers. Specializing in computer-aided design and vehicle calibration, Weistec has the ability to manufacture quality products that are capable of withstanding even the most rigorous testing conditions. From OEM vehicle manufacturers to the aftermarket performance enthusiast, Weistec aims to deliver innovative solutions that address a wide range of client needs and desires.
Find Weistec Parts at Vivid RacingVivid Racing carries an extensive lineup of Weistec products to suit all your needs and preferences. Our inventory is virtually endless with everything you could possibly need to upgrade your vehicle in terms of performance, power, handling, suspension, aesthetics, and accessories. If you cannot find what you are looking for above or need help choosing a product for your needs, please give us a call at (480) 966-3040. We will advise you on the possible options and walk you through the entire purchase process to ensure a hassle-free experience.