High Volume Fuel Rail High Volume Fuel Rail
AEM High Volume Fuel Rails are CNC
machined from 6061 T-6 billet aluminum and feature a 1/2-inch fuel bore capable of flowing enough fuel to support most
high-performance engines. This larger bore also dampens the back pulse created by oversized injectors in high-output
applications. The AEM fuel rail also works perfectly with stock injectors. Each fuel rail includes an additional
port for the installation of nitrous set-up or external fuel pressure gauge. The ends of the fuel rail are tapped
to accept either -6 or -8 line and a custom fitting alows for the use of the stocck fuel hose. AEM's High Volume
Fuel Rail kit includes new injector o-rings, fuel line fittings, comprehensive installation instructions and AEM
decals.AEM High Volume Fuel System components are engineered with fuel delivery capabilities necessary to support high-horsepower engines. AEM High Volume fuel rails, fuel filters and adjustable fuel pressure regulators are designed to install using factory hardware (except Universal FPR), and are pre-tapped to accept AN fittings from custom fuel lines. Our fuel rail and adjustable fuel pressure regulators will support up to 1,000 horsepower, and our fuel filter will flow for up to 500 horsepower.
Adequate fuel delivery is generally the greatest problem that we have encountered when tuning and calibrating EFI systems. We cannot stress enough how important it is to have adequate, consistent fuel pressure, and volume to the injectors. The use of a properly sized fuel line from the tank, fuel rail and return hose is imperative. Measures must be taken to eliminate excessive pulsations in the fuel rail so the injectors get even fuel flow. These instructions will review the entire fuel delivery system in the following section to help you design your own comprehensive fuel delivery system. On vehicles using the PNP version of the AEM EMS, all of the essential elements for adequate fuel delivery are designed into the stock fuel system. If you are using a PNP system on a vehicle that is heavily modified (forced induction, nitrous oxide, etc.) pay close attention to the following information regarding fuel delivery, as the OE fuel delivery system may not be capable of supplying an adequate amount of fuel.
Even with proper injector and fuel pump sizing, a fuel system will not flow adequately unless the hoses that deliver the fuel to the fuel rail are of sufficient size and are routed properly. On systems that use the PNP version of the AEM EMS, there is no need to replace the fuel delivery hoses unless the engine is heavily modified.
NEVER route fuel hoses through the interior of a car. Put bluntly, this is a dangerous thing to do. Whenever possible, use a delivery tube to make the connection from the pump discharge to the filter in the front of the car. The lines should be rated to withstand at least twice the maximum pressure of the EFI system.