The Weistec Engineering M133 W.4 Turbo Upgrade is a full turbocharger replacement solution for those looking to make significantly higher power than the stock frame turbocharger is capable of generating.

Weistec's Calibration Department has spent months perfecting the ECU Calibration for the M133 in order to offer you unlocked potential to your already potent 2.0L turbocharged four cylinder. Dedicated to providing you with the latest and superior in performance upgrades, the M133 has proved to be a powerhouse with our upgrades.

The Weistec Engineering M133 W.4 Turbo Upgrade is a full turbocharger replacement solution for those looking to make significantly higher power than the stock frame turbocharger is capable of generating.

The Weistec M133 Downpipe for the CLA 45, GLA 45, and A 45 is designed to have the best possible flow without any permanent modification to the engine or chassis and even makes use of the factory exhaust hanger.

The Weistec Engineering M133 W.4 Turbo Upgrade is a full turbocharger replacement solution for those looking to make significantly higher power than the stock frame turbocharger is capable of generating.

Built around the renowned Garrett GTX3071R Gen 2 ball bearing turbocharger, the M133 W.4 system features a CNC-machined billet aluminum compressor wheel, providing exceptional airflow and performance.

WEISTEC FULLY REPROGRAMS THE ECU TO MERCEDES STANDARDS, AND ENSURES THAT ALL ENGINE SAFETY CONTROLS ARE FULLY FUNCTIONAL. THE WEISTEC M133 TURBO UPGRADE AND ACCOMPANYING PROGRAMMING ARE DESIGNED AROUND THE USE OF 91 OCTANE FUEL OR HIGHER ONLY.

The W.4 Turbo Upgrade replaces both the factory turbochargers and exhaust manifolds. Built specifically for the M133 engine, this turbo is based on the impressive Garrett GTX3071r Gen 2 ball bearing units.

The Weistec Cast Stainless Steel Twin Scroll Manifold is incredibly strong and sturdy in comparison to tubular manifold designs which have a tendency to crack and leak.

The Weistec Cast Stainless Steel Twin Scroll Manifold is incredibly strong and sturdy in comparison to tubular manifold designs which have a tendency to crack and leak.? A cast manifold is also better at retaining heat than a tubular manifold resulting in quicker response from the turbocharger.