After I put it to the test, I could feel the difference in my automotive`s performance. The Divided T4 Turbo Turbocharger Inlet Twin Scroll Gasket is a great upgrade for those looking to enhance their turbo's efficiency .The stainless steel and PTE construction make it durable and reliable. The only downside is the installation process may be difficult for those with little experience. Definitely worth the investment for a turbo enthusiast..