EZ EFI 1.0 Dual Quad Upgrade Kit - Black

The FAST Electronics EZ EFI 1.0 Dual Quad Upgrade Kit in black (SKU FST304155-06) is a complete fuel injection system designed to replace traditional carburetor setups on engine builds requiring square-bore throttle body compatibility. This kit combines modern EFI precision with dual quad performance characteristics, delivering consistent fuel delivery across a wide RPM range with the reliability that modern fuel management systems provide.

The system features 74 lb/hr fuel injectors calibrated to support 1150 CFM airflow capacity, a specification that aligns the kit with mid-range engine displacement and high-performance naturally aspirated applications. The dual quad configuration allows builders to maintain the aesthetic and manifold compatibility of classic dual-quad setups while eliminating the tuning inconsistencies and cold-start issues inherent to mechanical carburetor systems. Square-bore throttle body design ensures direct fitment to engines originally equipped with square-bore manifolds, eliminating adapter requirements and optimizing throttle response.

This upgrade kit serves engine builders and restoration shops converting vintage or modified engines from carburetors to fuel injection without sacrificing intake manifold authenticity. The EZ EFI 1.0 platform is recognized in the performance community for straightforward tuning, real-time engine data logging, and simplified wiring compared to standalone EFI systems. Users gain the drivability advantages of closed-loop fuel control—cold-start reliability, load-sensitive jetting, and altitude compensation—while retaining the visual identity of dual-quad induction.

Weighing 6.57 lbs, the complete kit packages the throttle body assembly, fuel rail, injector mounting hardware, and base tuning calibration required for installation. FAST Electronics positions this kit at the intersection of traditional hot rod aesthetics and modern engine management, making it a practical choice for builders who want repeatable performance and daily drivability from engines that once relied on carburetor guesswork.