AFD BMW E39 M5 S62 1998-2003 ProFlex Commander Plug N Play Flex Fuel System

ProFlex Commander Plug N Play flex fuel system for 1998-2003 BMW E39 M5 S62. This system allows you to start making more power and running cooler with E85. True plug and play flex-fuel kit for BMW in about an hour with no tuning required! 7-10% More wheel HP and torque on E85 (dyno proven). The ProFlex Commander
product line is backed by a limited 12 month warranty.

For anyone who has or is planning to add a supercharger, turbocharger, or run injectors larger than 60lb, we recommend upgrading to the ProFlex Commander Pro — specifically designed for high-performance builds. see the blue "choose product options" button!

Notes: While most of our systems are DIY your M5 requires specific routing around sensitive accelerator linkage. Professional installation is recommended.

*Notice, if you have or are planning to put a supercharger, turbo, or larger than 60lb injectors we recommend upgrading to the Pro Commander system and getting a E85 or flex-fuel specific tune.

ProFlex Commander Features:
Complete system - everything you need to run E85
100% Dyno tested for safety, durability and power gains
Easy installation for your professional BMW shop (see note)
Patented BlendSense™ technology adjusts in real time with 30 millisecond refresh rate
True flex fuel - switch from gas to ethanol and back anytime
Improved injector management for more power on gas or E85
7-10% More wheel HP and torque on E85 (dyno proven)
No tuning required - Compatible with stock or performance gas tunes; instantly adapts to new tunes
Cleaner emissions and cooler cylinder, oil and coolant temps
Race grade fuel at the pump - high octane, low cost
Compatible with bolt-ons (for power adder applications the ProFlex Commander Pro system is highly recommended)
ProFlex Connect app provides accurate, real-time ethanol content on your iPhone or Android device via BT Wireless communication
Cold Start Plus™ - improves fuel atomization for easier starting in cold weather

Vehicle Fitment:
1998-2003 BMW E39 M5 S62

When to choose which fuel sensor do you need?

Standard GM/Continental Flex Fuel Sensor: Perfect for those making less than 700 crank horsepower these sensors are extremely reliable. 600LPH is the max flow we recommend.

*Flow picture shows loss of psi as flow is increased.

AFD Billet E-Sense Flex Fuel Sensor: High-flow sensor perfect for those making 700HP+ this sensor will also add fuel temperature monitoring using the ProFlex Connect App.

ProFlex Commander vs ProFlex Commander Pro?

Standard Commander: The go-to option for stock or mildly modified vehicles with factory fuel injectors and naturally aspirated setups. No tuning required—perfect for reliable, daily-driven performance builds. Not recommended for supercharged or turbocharged applications or setups using injectors larger than stock. Check out the Pro System features below!

Commander Pro: Designed for high-performance applications running power adders and upgraded fuel systems (e.g., 60 lb injectors or larger), this setup offers enhanced injector control for high-flow injectors. We recommend the Pro System for those who already have or is planning to add a supercharger, turbo, or larger-than-60 lb injectors in the future as this system grow with your build. We recommend getting an E85 or flex-fuel tune with this system, especially if you’re using a power adder that includes a tune (e.g., ProCharger, Whipple, Magnuson) or if you already have a custom tune installed.