2024-2025
2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) 3 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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eFlexFuel eFlexPro E85 Flex Fuel Conversion Kit (99-04 Mustang, Excluding GT; 05-10 Mustang GT)Find parts that fit my vehicle
Item 432591
$0.00
3 Reviews
Our Price
$999.00 kit
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- 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 1999-2004 Ford Mustang Models (Excluding GT and 2005-2010 Mustang GT)
Description
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 1999-2004 Ford Mustang models (Excluding GT and 2005-2010 Mustang GT).
Fitment:
- 1999 Ford Mustang
- 2000 Ford Mustang
- 2001 Ford Mustang
- 2002 Ford Mustang
- 2003 Ford Mustang
- 2004 Ford Mustang
- 2005 Ford Mustang
- 2006 Ford Mustang
- 2007 Ford Mustang
- 2008 Ford Mustang
- 2009 Ford Mustang
- 2010 Ford Mustang
eFlexFuel SK1445US
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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
3.7
Customer Reviews (3)
Reviews of eFlexFuel Tuner products have an average rating of 4.2 out of 5
Questions & Answers
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Will It Fit My Mustang
- Bullitt - 01, 08, 09
- Cobra - 99, 01, 03, 04
- Cobra R - 00
- GT - 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10
- Mach 1 - 03, 04
- V6 - 99, 00, 01, 02, 03, 04
