For decades, water and methanol injection has been a trusted ally in various applications, starting with aircraft engines where it helped reduce knock while boosting power. Over time, this technology made its way into the motorsports scene, proving its worth, especially for turbocharged engines. Now, with the Weistec Water-Methanol Injection System, you can give your M133 Turbo 2.0L engine a serious upgrade that enhances both consistency and performance.
The Weistec system is designed to provide impressive cooling and knock prevention benefits. It features a sophisticated Water/Methanol Controller equipped with a built-in MAP sensor. This progressive controller gradually increases injection as boost builds, ensuring a smooth and seamless operation that you’ll appreciate every time you hit the gas.
Worried about installation? Don’t be! The system includes a custom-designed, CNC machined billet aluminum Weistec Vacuum/Boost Adapter that makes tapping into the manifold for vacuum and boost readings a breeze. Plus, the Weistec Silicone Turbo Charge Pipes come with built-in ports for the Weistec Barbed Injector Body, allowing for the use of two injectors for consistent injection and cooling.
The combination of methanol's cooling effects and water's knock resistance means you can expect significant gains in horsepower and torque, all while reducing the risk of heat soaking your intercooler system. It's a win-win!
This system is a complete, bolt-on solution that eliminates any guesswork or need for custom fabrication. Weistec has meticulously engineered and manufactured many components to ensure a straightforward installation that generic kits simply can't match. With the performance and consistency it delivers, this system is a must-have upgrade for your M133 engine.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2014-2018 Mercedes-Benz A45 AMG |
A45 AMG | 2014-2018 |
|
2014-2019 Mercedes-Benz CLA45 AMG |
CLA45 AMG | 2014-2019 |
|
2014-2018 Mercedes-Benz GLA45 AMG |
GLA45 AMG | 2014-2018 |

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.