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Air and Fuel› Performance Packages

ProFlex

DX Flex Fuel System

Name: DX Flex Fuel System
Brand: ProFlex
SKU: PFD-MGT6

$969.03

SKU: PFD-MGT6

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

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Overview

The ProFlex DX is a plug-and-play flex fuel system engineered for 2018-2023 Ford Mustang GT and Mach 1 models with the dual-injection 5.0L Coyote V8. This system enables the use of E85, gasoline, or any blend of the two without requiring manual tuning or calibration changes.

Utilizing patented BlendSense technology, it adjusts fuel delivery in real-time to optimize performance while maintaining factory drivability. The kit installs in approximately one hour and supports cooler operating temperatures and cleaner emissions.

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The ProFlex DX is a patented, adaptive flex fuel system designed specifically for 2018-2023 Ford Mustang GT, Mach 1, and Bullitt models equipped with the dual-injection 5.0L Coyote V8 engine. By providing real-time ethanol compensation, the system allows you to run gasoline, E85, or any mixture of both without needing to flash the ECU or perform manual tuning. It solves common fuel management latency issues found in stock PCMs while providing increased power and torque across the RPM range. The system features patented BlendSense technology with a 30-millisecond refresh rate and includes Cold Start Plus functionality to ensure reliable ignition in colder weather. The kit includes everything required for installation, which can be completed in about an hour using standard hand tools. It is compatible with bolt-on modifications and provides real-time ethanol content monitoring through the ProFlex Connect Bluetooth app. Note: If you have or plan to install a supercharger, turbocharger, or injectors larger than 60lb, an E85 or flex-fuel specific tune is strongly recommended. Specifically, vehicles using power adders such as ProCharger, Whipple, or Magnuson systems that include their own tune, or those already running a custom tune, should use an E85-specific calibration. Additionally, ensure your fuel system is properly configured to handle the increased fuel load. This product is not legal for sale or use in California.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	ProFlex
Part Number	PFD-MGT6
Category	Air and Fuel

Videos

Shelby GT350 Dyno Results with ProFlex E85 Commander

Introducing the ProFlex Commander Adaptive E85 Management System

Stacey David's GearZ Advanced Fuel Dynamics Proflex Commander Fuel System

Advanced Fuel Dynamics E85 ProFlex Commander Install on My Shelby GT350

Proflex Commander by Advanced Fuel Dynamics: E85 Installation for 5.0 Mustang

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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