Honda, Acura, and many other carmakers use cylinder deactivation as way to save fuel economy. Many people claim the fuel economy savings are negligible and the engine and other components may suffer from additional wear and tear.

Honda has been equipping VCM or variable cylinder management on their V6 engines for a while now. In the case of my Acura TLX, whenever the VCM activated the car would experience shaking that could be felt through the whole car. Passing power is reduced and the overall smoothness of the car was impacted.

There are a few VCM disabling devices on the market now including vcmuzzler, s-vcm, and vcmtuner. In this video I show how to install the vcmtuner and review the results.


I recommend this as a good DIY project if you have some basic wrenching and electrical skills. All DIY repairs or modifications you perform to your car are made at your own risk. I assume no liability for anything you choose to do to your car, before, or after watching one of my videos.

0:00 Overview
5:11 Installation
7:25 Road Test & Thoughts