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In Stock - Available from Supplier Dispatch between 22 September - 29 September.
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24/7 SUPPORT

The Dorch Engineering B58 Gen 1 Flex Fuel ECA Kit is the ultimate plug-and-play ethanol content analyser for Gen1 B58-powered BMWs, fully compatible with the latest MHD and Bootmod3 (BM3) tuning platforms. Thanks to recent software advancements, Gen1 B58 tuning now supports true CAN-based Flex Fuel tuning, eliminating the need for outdated Bluetooth ethanol sensors.

This CAN-based ethanol sensor doesn’t just monitor ethanol content — it directly communicates with the DME, enabling full Flex Fuel operation. With a Flex Fuel tune, your DME will automatically adjust your fuel, ignition, and boost settings based on real-time ethanol content, smoothly transitioning from a high-powered E85 map to a pump gas map, or anything in between. This seamless integration means no more manual calculations, map switching, or guesswork at the pump — your B58 is always running the optimal tune for the fuel blend in your tank.

The Dorch B58 Gen 1 Flex Fuel ECA Kit is 100% plug-and-play, requiring zero cutting or wire tapping, and is completely reversible. The wiring harness integrates directly with the OEM wiring, and the ethanol sensor and fuel lines tuck neatly away, allowing for full reinstallation of OEM sound insulation and engine covers — keeping your engine bay looking factory fresh.

To maximize accuracy, the ethanol sensor is mounted as close to the injectors as possible, ensuring that fuel mixture changes are detected and communicated to the DME instantly for precise real-time adjustments.

With a DIY-friendly, detailed installation manual, the kit can be installed in approximately 30 minutes when combined with a HPFP upgrade or about 1 hour on its own, depending on experience.

For BMW 340i, 440i, 540i, 740i, and other Gen1 B58 models, the Dorch Engineering B58 Gen 1 Flex Fuel ECA Kit offers the ultimate combination of precision ethanol monitoring, automatic Flex Fuel tuning, and easy installation, giving you the flexibility to run any fuel blend with total confidence and maximum performance.

PURCHASE INCLUDES

  • Zeitronix ECA-CAN Module
  • Custom PTFE Hose Set
  • Dorch Plug-n-Play ECA Harness
  • Genuine Continental Ethanol Sensor
  • Pre-cut Firewall Grommet
  • Mounting Accessories

APPLICATIONS

  • 2016-2019 BMW B58 F20 F21 BMW M140i
  • 2015-2019 BMW B58 F22 M240i
  • 2015-2019 BMW B58 F30 F31 340i
  • 2015-2019 BMW B58 F32 F33 F36 440i
  • 2016-2019 BMW B58 G30 G31 540i
  • 2017-2019 BMW B58 G32 640i
  • 2017-2019 BMW B58 G11 G12 740i
  • 2018-2019 BMW B58 G01 G02 X3 X4 m340i

* ONLY UP TO 2019 Model Year
KIT NOT COMPATIBLE with 2020+ B58 Vehicles

ADDITIONAL INFORMATION:

Brand

PREPREG is a common term for a reinforcing fabric such carbon which has been pre-impregnated with a resin system. This resin system (typically epoxy) already includes the proper curing agent. As a result, the prepreg is ready to be laid into the mold without the addition of any more resin. In order for the laminate to cure, an autoclave production process is used, a combination of high pressure and heat.

  • Maximum strength and performance characterictics. In a hand layup production process, it is difficult to achieve 50% fabric and 50% resin content.  Typical hand laminates, even when vacuum bagged, end up with a significant amount of excess resin. Excess resin increases brittleness and reduces overall strength properties. On the other hand, most prepregs contain around 35% resin. This is ideal for maximum cured properties and generally impossible to achieve in normal hand lamination.
  • Uniformity and repeatability. The prepreg is of uniform thickness and each part coming out of the mold may theoretically be the same. Vacuum bagging technology may have some errors in processing, but prepreg ensures production consistency.
  • Reduce curing time. After the thermal curing cycle, no need to wait for the standard 48 hours can be fully cured.
  • Aesthetics. Although prepreg processing still requires mold preparation and demoulding, prepreg processing eliminates air bubbles, makes it easier to obtain a smooth, glossy surface as well as eliminates any seaming lines.

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We offer free tracked shipping on all orders within mainland EU. Orders to remote areas such as Malta, Cyprus, and Iceland may incur a surcharge. Worldwide shipping is also available—please contact us for a quote.

Most orders dispatch within one business day (Monday to Friday). EU delivery takes 3–5 working days from dispatch, and tracking details will be provided via email once your order has shipped.

Please note that import taxes may apply outside the EU, and these are the responsibility of the buyer. Some items may ship directly from our suppliers and may have varying delivery times. If an item is out of stock, we will contact you to discuss the available options.

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RETURNS

Changed your mind? You can return unused, uninstalled items in original packaging within 30 days of delivery. Return shipping is the customer’s responsibility unless the item is faulty.

Custom, used, or built-to-order items are non-returnable.

Once we receive and inspect your return, refunds are typically processed within 10 business days.

If your item is damaged or incorrect, contact us within 48 hours with photos and order details.

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WARRANTY

All VA and VA Motorsports products come with a 1-year limited warranty covering manufacturing defects and fitment issues. For third-party items, warranty terms vary by brand—please check the product listing or contact us for details.

This warranty does not cover wear and tear, incorrect installation, cosmetic damage, labor, or third-party costs.

To start a claim, email us with your order number, issue description, and photos. If the claim is approved, we’ll offer a replacement, store credit, or a refund.

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FREQUENTLY ASKED QUESTIONS (Faq)

Yes, we do ship worldwide. However, we recommend contacting us before placing your order, as the price only covers the product and does not include shipping costs

Each product listing includes detailed compatibility information. Please review it carefully to ensure the part fits your specific vehicle model and year. If you’re unsure, feel free to contact us with your vehicle details, and we’ll be happy to assist you.

Yes, we do provide this service in our workshop. Our skilled technicians can professionally install your body styling and performance parts to ensure a perfect fit and optimal performance. Please contact us to schedule an appointment or for more information.

Yes, customers within mainland EU can enjoy free shipping on all orders. However, in rare cases, customers from non-EU or remote areas may be contacted about an additional shipping fee. For further questions, feel free to contact us.

Shipping times vary based on your location and the product ordered.

Take note, that in-stock products will be shipped the next working day. Otherwise, your order will be dispatched as stated on its product information.

For customers within the EU, delivery typically takes 3-5 working days from the dispatch date.

For international customers, orders are generally delivered within 5-10 working days from the dispatch date.

We accept returns on unused and uninstalled items within 14 days of purchase. The product must be in its original packaging and condition. Shipping fees are non-refundable, and return shipping costs are the buyer's responsibility.

Dorch Engineering BMW B58 Gen 1 Flex Fuel Kit ECA Plug and Play
Dorch Engineering BMW B58 Gen 1 Flex Fuel Kit ECA Plug and Play
679.99€