Based on my observations, this so-called "performance upgrade" did nothing but leave me disappointed. The quality of the materials used seems subpar and did not live up to its advertised potential. I did not notice any improvements in my car's drive train, and in fact, it made the ride feel rough and jarring. The only positive thing I can say is that it was easy to install. Overall, I would not recommend this product for anyone looking to upgrade their car's performance.