Electronics for BMW 3 Series G20 (2019+)

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BMW fuel system electronics are crucial for the precise operation of your vehicleaEURtms fuel delivery system, optimizing fuel efficiency, and ensuring engine performance. These sophisticated components control essential functions such as fuel injection, fuel pump operation, and sensor data to manage fuel flow, maintain the correct air-fuel mixture, and improve emission control. BMW vehicles may also be equipped with flex fuel systems that adjust the air-fuel ratio depending on the type of fuel being used, allowing for better adaptability to E85 or other ethanol blends. Additionally, fuel pump control modules play a key role in regulating fuel pressure and ensuring the pump operates at optimal levels. Common issues with fuel system electronics include malfunctioning sensors, failing fuel injectors, and damaged fuel pumps or fuel pump control modules, leading to poor fuel economy, engine misfires, or stalling. Solutions to these problems include replacing faulty sensors, upgrading to high-quality fuel injectors, and ensuring the fuel pump control module is functioning correctly. By investing in premium components and performing regular maintenance, these issues can be minimized, extending the lifespan of the fuel system while ensuring peak performance.
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MHD Tuning CAN FlexFuel Analyzer - G-Chassis B58/S58
Gen 1 B58 compatible with MHD or ECUTEK tunes, Gen 2 B58 compatible - Automatic Transmi...
For vehicles with an Automatic Transmission only
MHD Tuning - Corporate Logo
T#:17937420
Part#: ECA-G-B58-S58-AT
In Stock
$ 490.00 USD
Free Shipping on orders $49 and up
$ 490.00 USD
Free Shipping on orders $49 and up

Upgrade your BMW's fueling system with the CAN Ethanol Content Analyzer from Turner Motorsport. This analyzer reads data from the E85 sensor and converts it to CAN format, enabling the DME to make accurate fueling decisions based on E85 content. Utilizing this analyzer alongside MHD or ECUTEK tunes allows you to activate a FlexFuel-like feature, optimizing performance and efficiency. Protect your engine from potential damage by ensuring your tune supports the FlexFuel feature for the E85 blend you're using.


Plug and play installation, no manual wiring or plumbing required

High-quality hoses tested with 10 bars of static pressure (145 Psi)

Each unit undergoes testing before leaving the manufacturer

Compatible with MHD or ECUTEK tuning solutions

Works with the stock or TU High-Pressure Fuel Pump

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BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness
For Vehicles With Motiv ReFlex Unit Currently Installed Only
Motiv Motorsports - Corporate Logo
T#:22723690
Part#: 101-0212
In Stock
$ 49.00 USD
Free Shipping on orders $49 and up
$ 49.00 USD
Free Shipping on orders $49 and up

BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness simplifies the integration of an ethanol content sensor into your BMW's Re|Flex system. This harness is designed to enhance your vehicle's performance by scaling the sequential port injection based on real-time ethanol content, eliminating the need for manual adjustments. Key benefits include:

  • Effortless Installation: Plug-n-play design makes it easy to connect an ethanol content sensor without extensive modifications.
  • Real-Time Adjustments: Allows for automatic scaling of port injection based on real-time ethanol content, optimizing engine performance.
  • Seamless Integration: For CANbus integrated vehicles, it facilitates integration with the factory DME/ECU (pending feature release by tuning platforms).
  • No Manual Flashes Required: Removes the need for ground disconnection or map switching on your port injection controller.

Please note that the ethanol sensor is not included with this harness.

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BMW B46 B48 B58 Ethanol Content Sensor
We Price Match - Give Us A Call or Chat!
VDO - Corporate Logo
T#:29500150
Part#: 100.1037
In Stock
$ 90.00 USD
Free Shipping on orders $49 and up

BMW B46 B48 B58 Ethanol Content Sensor is a genuine Continental (VDO) Flex Fuel E85 sensor designed to accurately measure the ethanol-to-gasoline ratio in your vehicle's fuel system.

  • Accurate Measurement: Measures the ethanol content in fuel, providing precise data for optimal engine performance and fuel management.
  • Flexible Compatibility: Works with a blend of ethanol and gasoline, suitable for vehicles with appropriate fuel lines, injectors, and ECU calibration.
  • Quick-Connect Installation: Features quick-connect style fuel connections for easy installation in the main fuel feed line.
  • Integrated Fuel Analysis: All fuel passes through the sensor before reaching the fuel rail, allowing for accurate ethanol percentage readings sent to the vehicle's DME or ECU.
  • Standard Fittings: Both inlet and outlet connections are 3/8" SAE sized fittings for straightforward integration with existing fuel systems.

This ethanol content sensor is essential for vehicles running flex fuel, ensuring that the engine receives the correct ethanol ratio for peak performance and efficiency.

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Motiv Motorsports - Corporate Logo
T#:29201083
Part#: 900.1016
In Stock
$ 95.00 USD
Free Shipping on orders $49 and up
A flying lead harness is a wiring harness that is unterminated at one end and has an excess length of wire so that installation can be customized by the end user. That makes this section of the ReFlex+ Install Harness truly universal. On one end, this harness has an 8-pin connector to plug into any one of our ReFlex+ Main Injector Harnesses. The other end of each wire is unterminated and will be connected to the appropriate sensor, ground, or power supply based on installation instructions. Each harness has a wire for: Switched +12v Input w/ inline fuse +5v Input Ground Can HI Can Lo Cam Sensor Signal Crank Sensor Signal Map Sensor Signal
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Motiv Motorsports - Corporate Logo
T#:29500156
Part#: 200.1105
Ships in 5 Business Days
$ 22.99 USD
Free Shipping on orders $49 and up
Quick disconnect adapters (QDA) are commonly used to adapt different components into vehicle fuel systems without requiring permanent modification. These adapters are machined from high-grade aluminum and anodized for corrosion resistance. QDAs incorporate Viton© o-rings which are compatible with most types of fuel, solvents and oils. QDAs maintain a reliable leak-proof seal under normal fuel injection system operating pressures. This particular QDA is sized perfectly to adapt right between the fuel line you were going to connect to your ethanol sensor. 3/8" (9.5mm) female quick disconnect 3/8" (9.5mm) male quick disconnect 1/8" Female pipe thread port * Viton© o-rings Crecent-lock system E-85 compatible Black anodized aluminum
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Motiv Motorsports - Corporate Logo
T#:29234311
Part#: 900.1013
Ships in 5 Business Days
$ 90.00 USD
Free Shipping on orders $49 and up
Required when installing a Motiv ReFlex Lite to your inline-6 powered BMW! Includes x6 injector leads and direct, plug-in adapter to the ReFlex Lite Control Unit!

Motiv Motorsports - Corporate Logo
T#:29201081
Part#: 900.1008
Ships in 1-3 days
$ 195.00 USD
Free Shipping on orders $49 and up

BMW B58 3.0L ReFlex+ Main Injector Harness - Inline-6 offers a seamless integration solution for your turbocharged BMW inline-6 engine. Designed to work with the Motive ReFlex Control Unit, this plug-n-play harness ensures a hassle-free installation process for your 6 EV6/USCAR injectors.

  • Direct Plug-N-Play Installation: Connects directly to the ReFlex+ Control Unit and your EV6/USCAR injectors.
  • Versatile Connector Options: Includes DTM 3-Pin and 2-Pin connectors for integration with ethanol content sensors and external sensors.
  • Multiple Sensor Connectors: Features connections for a 0-10 Bar Pressure Sensor and a 0-5v sensor.
  • Auxiliary Output Wires: Provides 3x unterminated wires for additional low-side triggers from the ReFlex+ Control Unit.
  • Easy Connection: DTM 8-Pin connector allows for straightforward setup with ReFlex+ Install Harnesses.

Turner Motorsport's harness ensures efficient and reliable performance, streamlining the process of integrating your ReFlex+ Control Unit with your BMW B58 engine.

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Continental - Ethanol Sensor
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:38195409
Part#: 101-0126
In Stock
New Item
$ 87.99 USD
Free Shipping on orders $49 and up
Precision Raceworks 90-Degree 3" Silicone Elbow – High-Performance, Heat-Resistant Boost Pipe for Custom Intercooler Setups.

Motiv Motorsports - Corporate Logo
T#:29234303
Part#: 900.1012
In Stock
$ 80.00
$ 74.00 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 80.00
$ 74.00 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Required when installing a Motiv ReFlex Lite to your inline-4 powered BMW! Includes x4 injector leads and direct, plug-in adapter to the ReFlex Lite Control Unit!

Motiv Motorsports - Corporate Logo
T#:29201082
Part#: 900.1007
Ships in 5 Business Days
$ 175.00 USD
$ 175.00 USD
So you ​just bought a Motive ReFlex Control Unit and you're looking to install it on your turbocharged inline-6 BMW? Look no further as we have Motiv's plug-n-play main injector harness available to you! This injector harness plugs directly into you ReFlex+ and your 6 EV6/USCAR injectors! Port injection harness for Inline 4 engines and has EV6 / USCAR injector connectors DTM 3-Pin connector to connect to an ethanol content sensor connection using the ReFlex+ Plug-n-Play Ethanol Sensor Harness 2x DTM 2-Pin connectors to connect to external sensors like the ReFlex+ 0-10 Bar Pressure Sensor DTM 3-Pin connector for a 0-5v sensor DTM 2-Pin connector for an auxiliary output to supply switched +12v and a low side trigger from the ReFlex+ Control Unit 3x unterminated auxiliary output wires which function as low-side triggers form the ReFlex+ Control Unit DTM 8-Pin connector for easy connection to your choice of ReFlex+ Install Harnesses
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Fuel-It! - Corporate Logo
T#:21209864
Part#: GB58BFFK
Ships on Jul 15, 2025
$ 479.99 USD
Free Shipping on orders $49 and up
The complete kit with Bluetooth ECA includes the following: Genuine Continental® ethanol sensor Two 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) Plug and play harness Includes both Bluetooth App & 5v analog output for JB4 or flash tuning *For the BMW 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. *Ethanol Sensors don't actually read the ethanol content, the readings are based on the absence of gasoline, so if your fuel is contaminated your ethanol readings may be artificially elevated.
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Precision Raceworks - Corporate Logo
T#:38229107
Part#: 101-0029
Ships Jul 11, 2025
New Item
$ 14.99 USD
$ 14.99 USD
This USB to Serial converter allows you to connect any RS-232 serial device such as SplitSecond AIC controller to a USB port on your Desktop or Laptop PC. Easy installation with Universal Plug and Play (drivers pre-loaded on most computers) Compatibility with Windows 10/7/Vista/ XP/ME/98SE and Mac OS 10.1* and higher *While this cable is compatible with Mac OS 10.1 , Split Second Software is not currently Mac OS Compliant
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Black Market Parts Universal Fuel Pump Wiring Kit
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38195421
Part#: 601-0054
Ships Jul 11, 2025
New Item
$ 14.99 USD
$ 14.99 USD
The Black Market Parts Universal Fuel Pump Wiring Kit is a one-stop shop solution for anyone looking to add an additional fuel pump to their fuel tank. This compact kit provides 6 inches of 100% E85 compliant 12 gauge wiring so you don't have to buy complete spools of wire just to get the little wire you need to extend the pump harness. The kit also includes all hardware for bulk head style pass-through for power used by pump manufacturers around the world. Full stainless bulk head power posts make it easy to add pass-through power to any fuel pump
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