BMW S63TU M5 M6 M8 X5M X6M Flex Fuel Ethanol Content Sensor for E85 Fuel Monitoring
- Description
- Fitment
- Refund Policy
Know your exact ethanol content in real-time with our new LED display or by using the BMS CANflex, Fuel-It! or JB4 mobile app on your smartphone or tablet.

If you're running E85, you need this kit!
This is a complete plug & play kit to install a flex fuel kit in your S63 equipped BMW in about 30 minutes. (Check compatibility for your platform below)
Our CANbus ECA is compatible with JB4 as well as flash only applications like MHD, BM3, and EcuTek that read the standard 0xEC flex fuel CANbus address format.
We now offer 2 types of kits:
- CANbus ECA and Universal Harness kit = Includes universal harness that works for all applications including manual cars and those running a BM3 flex fuel tune.
- Fuel-It! Bluetooth ECA kit = Includes a Bluetooth ECA for use with JB4 and the Fuel-It! app. *Does not include CANbus integration
BMS CANbus ECA kit includes:
- Genuine Continental® ethanol sensor
- BMS CANflex LED ECA for use with JB4, MHD, & BM3
- Billet custom fittings
- Stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
CANflex ECA's support all the popular CANbus addresses (0xec, 0x4cb, etc), including custom addressing.
Download the free BMS CANflex app here:
*****Wiring diagram for the new BMS Bluetooth CANflex Harness*****
- Red: (originally Red/Green): 12v switched power via fuse tap or posi-tap
- Black: Chassis ground
- Brown: (originally Orange): CAN-
- Green: (originally Red/Blue): CAN+
- Blue: 5V legacy output for input for input into JB4

Fuel-It! Bluetooth ECA kit includes:
- Genuine Continental® ethanol sensor
- Billet custom fittings
- Stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
- Fuel-It! Bluetooth analyzer (iPhone or Android app must be downloaded to use this kit)
- Includes both Bluetooth App & 5v analog output for JB4 or flash tuning
Download the Fuel-It! ECA app here:

Vehicle Fitment
BMW M5
• 2012-2016 S63 F10 BMW M5, including Competition
• 2018-2023 S63 F90 BMW M5, including Competition and CS models
BMW M6
• 2012-2018 S63 F12 BMW M6 Convertible, including Competition
• 2013-2018 S63 F13 BMW M6 Coupe, including Competition
• 2014-2019 S63 F06 BMW M6 Gran Coupe, including Competition
BMW M8
• 2020-2025 S63 F91/F92/F93 BMW M8 Convertible, Coupe, and Gran Coupe, including Competition
BMW X5 M
• 2015-2018 S63 F85 BMW X5 M
• 2020-2023 S63 F95 BMW X5 M, including Competition
• 2024-2026 S68 F95 BMW X5 M Competition
BMW X6 M
• 2015-2019 S63 F86 BMW X6 M
• 2020-2023 S63 F96 BMW X6 M, including Competition
• 2024+ S68 F96 BMW X6 M Competition
BMW 7 Series
• 2023-2026 S68 G70 BMW 7 Series, including 760i xDrive
*For the BMW F and G-series JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI Ethanol Setup option 0 to enable pin location 2/3/4 flex fuel input.


INSTALL VIDEOS
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Labor Fees (if applicable)
AM Tuning Canada is not responsible for, and shall not be liable for, any labor fees, installation charges, removal charges, diagnostic fees, or other service-related costs incurred by the customer or any third party in connection with the installation, removal, modification, servicing, or use of any products purchased from AM Tuning Canada. Unless expressly agreed to in writing by AM Tuning Canada, all such labor and service costs are the sole responsibility of the customer.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
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