CTS Turbo Mercedes-Benz M133 A45/CLA45/GLA45 AMG Intake kit. We are proud to release the new CTS Turbo Intake System for Mercedes-Benz M133 A45 AMG, M133 CLA 45 AMG and M133 GLA 45 AMG. Our intake system is designed to provide the most air possible to increase intake sound and power, all while still using the factory intake box. We aim to provide the biggest, highest flowing and most affordable air intake system without sacrificing quality or performance. CTS Turbo high-flow 5″ air filter is installed on our custom filter adapter; and it is made to be one of the largest on the market. This results in a noticeable improvement to throttle response and overall power. This is even more evident once you start tuning your M133. Massive 5″ inlet high-flow air filter removes all factory restriction. Quick install using factory ram-air airbox. Increased air flow to the turbocharger. Re-usable air filter is meant to last for many years. Improved sound and power. 6 to 17hp horsepower gains (on tuned engines). Does not cause a CEL.