The original FAST™ EZ-EFI® featured patent pending technology with the most advanced self tuning control strategy available anywhere today. You could simply hook up the necessary wires, answer the basic setup Wizard questions on the included hand-held display and the system tuned itself as you drove.

But now there is an EZ-EFI® Dual Quad Self Tuning Fuel Injection System that features all of this same technology and is capable of supporting up to 1000+ horsepower engines and has the ability to double your fuel capacity!

This  new  system  is  offered  as  an  upgrade  kit  to  the  existing  EZ-EFI®  kits*  and  adds  several additional  parts,  including  a  second  unique  throttle  body  for  use  with  existing  dual  quad carburetor-type  manifolds,  injectors  and  a  basic  linkage  kit  necessary  to  hook  the  two  throttle bodies together (works with most inline manifolds).

The  original  EZ-EFI®  Self  Tuning  Fuel  Injection  System  is  a  complete  kit  that  includes  the ECU, wide-band oxygen sensor, wiring harness, fuel injectors, optional fuel pump kit and other assorted components, including the innovative 4150 Throttle Body. The FAST™ 4150 Throttle Body delivers the total package approach for anyone with an existing 4150-type intake manifold. Everything comes with the kit, including appropriate fuel injectors and fuel rails. In addition, it works with the original carb-style throttle linkage and is ready to accept all OEM sensors.