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eFlexFuel eFlexPro E85 Flex Fuel Conversion Kit (79-93 5.0L Mustang; 94-98 Mustang; 99-04 Mustang GT)

Item 432592
eFlexFuel eFlexPro E85 Flex Fuel Conversion Kit (79-93 5.0L Mustang; 94-98 Mustang; 99-04 Mustang GT)
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Our Price

$999.00 each

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • E85 Flex Fuel Conversion Kit
      • Drive on E85, Gasoline, or Combination
      • Gain 10 to 20% Horsepower/Torque
      • Fully Automatic: Tuning, Changing Maps, or Adjustments not Required
      • For Daily Driver or Weekender Vehicles
      • Mobile App-Controllable via eFlexApp App
      • Eco, Dynamic, and Sport Driving Modes
      • Adjust Cold-Start Fueling
      • Monitor Ethanol Content and Duty Cycle
      • Under-the-Hood Installation
      • ECU and OBD Remains Untouched
      • No Triggering of Check Engine Light
      • Easy to Set-Up and Use
      • Limited 5-Year Warranty
      • Fits 1979-1993 5.0L Ford Mustang, 1994-1998 Mustang, and 1999-2004 Mustang GT Models


      HP and TQ Boost. The eFlexFuel eFlexPro E85 Flex Fuel Conversion Kit is the ultimate solution for optimizing your vehicle's performance and fuel flexibility. With this conversion kit, you can effortlessly switch between E85, gasoline, or a combination of both, ensuring optimal power and efficiency for your daily driver or weekend vehicle. Experience a remarkable boost in horsepower and torque, ranging from 10 to 20%, without the need for manual tuning, map changes, or adjustments. This fully automatic system takes care of all the necessary optimizations, guaranteeing a hassle-free experience.

      Smart Choice. Stay in control with the intuitive eFlexApp mobile application, allowing you to conveniently manage your vehicle's settings and modes. Choose from eco, dynamic, and sport driving modes to match your desired driving style. Fine-tune your cold-start fueling and effortlessly monitor ethanol content and duty cycle in real-time, ensuring optimal fuel mixture for maximum performance. Furthermore, its "under-the-hood" installation allows for seamless integration into your vehicle without touching the ECU and OBD and triggering Check Engine Light.

      Installation. Putting this E85 Flex Fuel Conversion Kit on your ride is easy and requires no drilling.

      Warranty. There is a limited 5-year warranty for this product.

      Application. This eFlexFuel eFlexPro E85 Flex Fuel Conversion Kit fits all 1979-1993 5.0L Ford Mustang, 1994-1998 Mustang, and 1999-2004 Mustang GT models.



      eFlexFuel SK1438US

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • Control Unit
      • Ethanol Sensor
      • Wiring Harness With External Temperature Sensor
      • Additional Analog Inputs (Pair)
      • Cable Ties
      • Male Fuel Injector Connectors
      • Fuel Hose
      • Fuel Line Quick Connectors
      • Fuel Line Disconnect Tool
      • Hose Clamps
      • Installation And User Guide

      Customer Reviews (3)

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        Reviews of eFlexFuel Tuner products have an average rating of 4.2 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 01
          • GT - 99, 00, 01, 02, 03, 04