This design produces the best fuel atomization and precise distribution to each cylinder for the ultimate performance. The fuel injector is also timed with the intake valve opening, giving the ultimate control and is the most efficient way to deliver fuel into your engine. This location provides a more efficient mixture control thats unaffected by varying intake manifold runner temperatures and length. Key to the improved performance of a system like this is the fuel injector location, which is at the end of the runner on the intake manifold right before the air flow stream enters the combustion chamber. Pro-Flo 4 EFI systems feature a high performance Edelbrock intake manifold with a 1,000 cfm throttle body, fuel rails and individual injectors for each cylinder. The OEM’s only utilized throttle body style injection for 9 years before transitioning to sequential port fuel injection for improved drivability and efficiency. Typically, the center cylinders run slightly richer than the outer cylinders, hindering tuning for peak fuel economy and peak performance. This can also cause the air/fuel mixture to separate as it flows to the cylinders, resulting in an uneven mixture between cylinders. ![]() Another drawback is the delayed throttle response since the fuel must travel through the intake manifold to the combustion chamber. Mixing fuel this way allows for it to puddle and condense in the plenum of the intake manifold, a recipe for hard cold starts. The Pro-Flo 4+ from Edelbrock is an ultra simple plug-and-play solution, with loads of potential for both calibration and on-board diagnostics. It’s the most universal type of Electronic Fuel Injection system, but it’s not ideal for high performance engines. This design delivers the fuel into the air flow stream in the plenum similar to a carburetor. ![]() Includes multiple dash display configurations for monitoring engine vitals and performance multiple control functions including two adjustable cooling fan outputs, idle speed, AFR set points, acceleration fuel tuning, ignition control, cold start fuel, and cranking fuel.Throttle Body style EFI systems feature fuel rails and injectors mounted directly to a throttle body. * E-Tuner 4 app with Bluetooth connectivity between ECU and Android phone or tablet. * Systems automatically compensate for altitude and weather changes * Now boost compatible up to 15 psi by switching to a 2-bar MAP sensor and downloading the new firmware update from Edelbrock for free! It is recommended to regularly check for firmware updates even if not utilizing boost control. * Offered with multiple fuel injector choices * Ignition control-adjust ignition curve with the E-Tuner 4 App for optimal performance and mpg * Self-learning technology-no tuning experience or laptop tuning required * Ready to run out of the box with pre-loaded calibrations * Distributor (not included with LS kits) The E-Tuner 4+ app can be downloaded for free from either the App Store or Google Play. * E-Tuner application for setup and engine monitoring idle speed, acceleration fuel, coolant fans, rev limiter and much more from the E-Tuner 4+ app, giving you complete control of the system. * Fully assembled OEM high-quality wiring harness with pre-terminated connectors and labeled connection for a simplified installation * Fully assembled intake manifold with air valve, fuel rails, and injectors The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. * Available with or without easy-to-use 7 in. * Engine Control Unit with faster processor and upgraded Bluetooth chip in a thinner waterproof design Along with innovative design, Pro-Flo 4 systems have the latest technology with an all-new ECU, and even more features for advanced tuning, with the key being their exclusive E-Tuner app with base calibrations developed on their dyno.Įdelbrock Pro-Flo 4 EFI systems include and feature: This Edelbrock design produces the best fuel atomization and distribution for the ultimate performance, as well as delivering the most control and the most efficient way to deliver fuel to your engine. The E Tuner APP and Tablet are for setting up, tuning and troubleshooting the Pro-Flo 4 EFI. The icon may be on a different part of the home screen, or select the All Apps icon and find it in that menu. Unlike regular throttle body EFI systems, Pro-Flo 4 features the fuel rails and individual injectors for each cylinder mounted on the manifold. From your mobile devices Home Screen, find the Edelbrock E-Tuner icon. Edelbrock 357300 Pro-Flo 4 XT Sequential Port EFI System 35 Lb/Hr Injectors Capable of 450. ![]() Use with boosted applications requires a 2-bar MAP sensor.Įdelbrock Pro-Flo 4 EFI systems provide you with a high performance traditional-style intake and 4150-style throttle body. Pro-Flo 4 does not require laptop tuning. Notes:Supports up to 825 HP Includes Android tablet for a wireless Bluetooth connection to the ECU for set up and fine tuning. Throttle Body Mounting Flange:4-barrel square bore
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