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Sales & Specials

E Series N55 JB4 - Harness A

Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For 2011 model year vehicles or older.
Not for sale or use in the state of California.
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ECS Part #
Burger Motorsports
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Product Details

Not for sale or use in the state of California.

Having your cake and eating it too has never been so delicious. Now available at ECS Tuning, the legendary Burger Motorsports JB4 module is one of the simplest and most dramatic modifications you can perform on your BMW. Check out the install guide below, and see for yourself! Whether this is your first modification, your only modification, or the finishing touch on your build, the Burger Motorsports JB4 is exactly what you're looking for. Simple, plug-and-play installation can yield results of up to 60 wheel horsepower on stock cars - or over 100 on heavily modified vehicles! Plus, with an additional data cable or Bluetooth module, the JB4 can be updated, allowing you to connect your JB4 to a laptop or smart device. New files can be downloaded directly from Burger Motorsports or written specifically for your car by your tuner of choice. Simply put, the JB4 is as simple or as in-depth as you want it to be - a true jack of all trades.

  • Simple plug & play installation
  • Gains of up to 60 horsepower on stock cars
  • Gains of over 100 horsepower on modified cars
  • Can be updated and provide data logging capabilities with an additional cable

Note: For off-road racing use only. Not for sale or use in California. All buyers must sign an emissions compliance waiver prior to ordering.

This Part Fits the Following Vehicles

Make Model Submodel Engine
BMW E82 135i N55 3.0L
BMW E88 135i N55 3.0L
BMW E90 335i N55 3.0L
BMW E90 335xi N55 3.0L
BMW E92 335i N55 3.0L
BMW E92 335xi N55 3.0L
BMW E93 335i N55 3.0L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

Kit Contents

Description Brand Qty
JB4N55A - N55 JB4 (E82/E90/E92 135/335 harness A) Burger Motorsports - Corporate Logo 1

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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