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El Camino Pro-Flo 4 EFI - ECU & Engine Harness Kit for GEN III 24x LS Engines

Part #:
Replacement for OEM #: 35711
Availability: In stock.
Fitment: 1959 thru 1972
See applications below for exact details.
(No Discount / Limited Discount)

Pro-Flo 4 EFI - ECU & Engine Harness Kit for GEN III 24x LS Engines
$1,329.99 Kit
˄ ˅


  • Plug-and-play ECU and harness kit for Gen III (Kit #35711)
  • Perfect for budget LS engine swaps where a simple and affordable engine EFI system is desired 
  • ECU and Harness kits can also be used to control high-performance LS builds up to 775 HP 
  • Includes ECU, wiring harness with EVI or Multec (truck) Injector connectors, Bosch O2 sensor, user-friendly Android-based calibration tablet 
  • Compatible only with cable driven throttle bodies

Designed and Manufactured in the USA

If you're swapping a Gen III or Gen IV Chevy LS engine into a hot rod, street rod or off-road vehicle and want to retain the LS engine's OEM EFI components, the new Pro-Flo 4 LS ECU & Harness Kit is what you'll need to complete the installation and get your car up and running with minimal cost, complications or effort. These kits are an economical solution designed specifically for Gen III LS engines with a 24x reluctor

This easy-to-use engine management system takes the place of the factory ECU and wiring harness. It plugs directly into your existing LS manifolds sensors, injectors, and coil packs for a simplified installation, start-up and tuning processes. This kit is the perfect solution for those "junkyard" LS engine swaps where the factory ECU and wiring harness may be missing, damaged or require costly modifications. 


What makes the Pro-Flo 4 LS ECU & Harness Kit so unique is the user friendly Edelbrock E-Tuner 4 Android Tablet App, which eliminates the need for laptop tuning or costly dyno sessions. E-Tuner 4 uses wireless Bluetooth connectivity to communicate with the ECU and comes pre-installed on a 7" tablet included in the kit. A Setup Wizard guides you through initial programming, and once you provide some basic data (type of engine, cubic inches, firing order, cam profile), the E-Tuner 4 app then selects and loads the most appropriate base calibration for your engine. As you drive the vehicle, the Pro Flo 4's self-learning ECU continually maximizes the fuel calibration for your engine configuration, so your vehicle is always performing at its best.



Make / Model Series Body Notes Year
CHEVROLET EL CAMINO STANDARD 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972
CHEVROLET EL CAMINO SS 1968, 1969, 1970, 1971, 1972
CHEVROLET EL CAMINO CUSTOM 1968, 1969, 1970, 1971, 1972
GMC SPRINT STANDARD 1970, 1971, 1972