Click on image to zoom

FST304155 - FAST EZ-EFI Dual Quad Upgrade - For use with FST30226-KIT and FST30227-KIT

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.



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 over 1200 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 FAST™ 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 from FAST™. 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. *Dual Quad Upgrade Kit must be used in conjunction with an original FAST™ EZ-EFI® Self Tuning Fuel Injection Kit, part #30226-KIT or #30227-KIT.
  • Easy-to-use setup Wizard provides comprehensive walk-through and system tunes itself
  • Base EZ-EFI® System includes ECU, wide-band oxygen sensor, wiring harness, injectors and throttle body. Kits with inline or in-tank fuel pumps are also available.
  • Dual Quad upgrade Kit includes second throttle body, injectors and linkage kit
  • Bolts on to ANY engine making 1200+ HP; ideal for hot rodders looking to increase fuel capacity
  • Application List



    • 304155
    • 304155
    • 036584201670
    • Fast
    • New


    Shipping Information

    • Item Requires Shipping
    • 10.0 lbs.

    Customer Reviews

    Comment Total Reviews (0)

    Write the First Review!

    You must login to post a review.

    • We don’t just want your business today. We want to EARN your business for LIFE!
    • USA Owned, Operated & Employed
    • Installers & Resellers Click Here to Apply
    • We Specialize In:
      • GM LS Conversions
      • Engine & Trans Combo Kits
      • Unique Ready to Run Engines
    • Have a question?
    • 888-748-4655 Mon-Fri 8AM-6PM EST
    • Click above for 24/7 Live Chat Service.