You can make all of the changes you want to your engine block and air intake system, but without an upgrade to your fuel delivery system, than all of those changes will be for nothing. Increases in engine displacement and air intake are designed to allow you to use more fuel in your cylinders. Your factory fuel delivery system is only able to deliver so much fuel, so if you want to take your engine's power to the next level, then you need to install an AEM fuel rail. The AEM fuel rail is designed to be able to deliver tremendous amounts of fuel to the cylinders, enabling you to properly utilize that turbo charger or cold air intake. The half inch diameter of the AEM fuel rail allows delivery of fuel that will support engines that make up to 1000 horsepower! Not only that, but the wider diameter of the AEM fuel rail means that the backpressures from the injectors is reduced, allowing the fuel to flow with less turbulence and allowing you to properly utilize a wide variety of stock and aftermarket fuel injectors. Like all AEM components, the AEM fuel rail is designed and manufactured in the United States using only the best materials and construction methods. Auto part customers definitely deserve high quality sales assistance while looking at quality auto parts. Because you deserve that, we created a 24/7/365 sales help call center to help you with your questions. Everybody hates to pay for shipping, that's why your parts come with free shipping for every order at least $50. If you can find a better price, call us - we always beat any price advertised elsewhere.