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Ready to take your F chassis N55 BMW to the next level? How about up to 60hp to the wheels (80hp crank) on a completely stock car or up to 100hp to the wheels (120hp crank) on a fully modified car? The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Including the ability to enable/disable the tuning from the driver's seat, gear dependent boost control to help with traction, autotuning for E85 mixtures, built-in diagnostic code reading/deleting, expanded engine safety systems, free firmware updates, in-dash boost gauge, the ability to control the exhaust flapper using your BC button, and much more.
The JB4 Tuner does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. For more advanced enthusiasts the BMS DATA or JB4 Mobile cable allows you to connect a laptop or smartphone for additional gauges, data logging, and free firmware updates as we add new features and maps.
The JB4 is a full plug and play device that installs and removes in minutes at home without special tools and unlike flash maps that permanently write over your DME with the JB4, your DME is never aware it's running more than the factory power levels. And when you're ready to change things up the JB4 is not VIN locked and can be moved to your next vehicle or resold. Made in the USA. 5 Year Warranty.
Note for electronic wastegate models the EWG add on connector remains optional and can be purchased separately from our upgrades for higher HP applications where direct EWG control is beneficial such as those using an integrated WMI kit or larger turbo.
Note for 2018+ G chassis vehicles with the digital dash layout we have not yet added in the JB4 commands to allow in-dash control but will provide those via a free firmware update once developed. Until then a JB4 mobile adapter or BMS data cable is required for any map and setting changes. Also note some F10 and X chassis models require a JB4 mobile adapter or BMS data cable to select options bit#1 to enable the in-dash controls for those models.
Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Separate JB4 Mobile app purchase also required.
Click here for the latest JB4 firmware, map guide, and details
• Power gains of up to 60hp and 60tq to the wheels on a stock vehicle (80 crank hp)
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 BMW tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
• Exhaust flap operation can be controlled in most JB4 applications
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock, this is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• Made in the USA
• Free USA Shipping
• 5 year warranty
F Chassis N55 JB4 Applications
BMW 1 Series
• 2012-2013 N55 BMW F20 F21 M135 (JB4_PWG)
• 2014+ N55 BMW F20 F21 M135 (JB4_EWG)
BMW 2 Series
• 2014+ N55 BMW F22 F23 M235i (JB4_EWG)
• 2016+ N55 BMW F87 M2 (JB4_EWG)
BMW 3 Series
• 2012-2013 N55 BMW F30 F31 335i/ix/Active Hybrid/xDrive GT (JB4_PWG)
• 2014+ N55 BMW F30 F31 335i/ix/Active Hybrid/xDrive GT (JB4_EWG)
BMW 4 Series
• 2014-2020 F32 F33 F36 435i / 435ix including Gran Coupe (JB4_EWG)
BMW 5 Series
• 2011 N55 BMW F10 F11 F07 535i/ix, ActiveHybrid 5, and 535i/ix GT (JB4_F10_A)
• 2012-2013 N55 BMW F10 F11 F07 535i/ix, ActiveHybrid 5, and 535i/ix GT (Either JB4_F10_A or JB4_PWG, check sensor using reference photo prior to ordering)
• 2014-2016 N55 BMW F10 F11 F07 535i/ix, ActiveHybrid 5, and 535i/ix GT (JB4_EWG)
BMW 6 Series
• 2011 N55 BMW F06 F12 F13 640i/ix and Gran Coupe (JB4_F10_A)
• 2012-2013 N55 BMW F06 F12 F13 640i/ix and Gran Coupe (Either JB4_PWG for Type B or JB4_F10_A for Type A, check sensor using reference photo prior to ordering)
• 2014+ N55 BMW F06 F12 F13 640i/ix and Gran Coupe (JB4_EWG)
BMW 7 Series
• 2013-2018 N55 BMW F01/F02 740i/ix (JB4_EWG)
BMW X Series
• 2011-2013 N55 BMW F25 X3 (JB4_PWG)
• 2014+ N55 BMW F25 X3 (JB4_EWG)
• 2014-2018 N55 BMW F15 X5 F16 X6 (JB4_EWG)
• 2017+ N55 BMW X4 M40i (JB4_EWG)
Wastegate Identification Chart. Pneumatic (PWG) or Electronic (EWG)?
E Chassis N55 JB4 - Click Here
The JB4 is a plug & play tune available for turbocharged vehicles. The JB4 tuner installs between your car's sensors and its DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster. While it's not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus, fuel & spark control, Bluetooth to your smartphone, and a variety of innovative and advanced features not possible with any other system. BMS regularly publishes free mapping and firmware updates adding performance and features as ongoing development allows. In addition, the JB4 system is not VIN-locked to your vehicle and can quickly be removed and swapped between cars or resold at a later time. Often imitated but never duplicated the JB4 has been the gold standard in plug and play turbocharged performance tuning for over a decade.
When Will This Ship?
In stock This products will ship within one business day from our warehouse in Québec, Canada.
Direct ship This product will ship direct from our supplier. Processing time and availability is subject to suppliers stock.
Warehouse transfer This product could take up to 12 business days before leaving our warehouse for delivery. Availability is subject to suppliers stock.
Free Shipping
All orders of $499 or more being shipped within Canada qualify for free standard shipping. Additionally, orders less than $499 qualify for an exclusive low shipping rate.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
In-Stock Products
In Stock
Items marked as "In Stock" are physically in our facility, so they're ready to ship when the order is placed. If all items in your order are "In Stock", then your order typically ships within one business day.
Other Availability Modes
We use several availability modes to most accurately identify when products will leave their home facility:
Direct Ship This product is available and will be sourced from one of our suppliers. It may take up to three business days before it ships.
Warehouse Transfer We receive the item, then we ship it to remain on time with the guaranteed delivery range chosen at checkout. It typically takes between 6 and 12 business days before it ships.
Discontinued - No longer available This product has been discontinued by the manufacturer and is no longer available.
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Additionally, on each product page, we have a tab for fitment information. By clicking on "Fitment", you can scroll and verify the part you are about to add to your cart indeed fits.
Furthermore, if you have a vehicle added to our vehicle selector and you are viewing a product page, you'll see fitment information below the "add to cart" button. If an item fits your car it will display "This Part Fits Your: Selected Vehicule". If an item does not fit your vehicle a message will display "This Part Does Not Fit".
A “Core Charge” is similar to the deposit you might pay for a can or bottle of soda. In many states, to promote recycling, you are charged a deposit when you purchase a can of soda and you receive your deposit back when you return the empty can. Many automotive parts have Core Charges that work the same way as a soda can deposit. The most common car parts that include a core charge are alternators, calipers, steering racks, and fuel injectors.
"MAP" pricing, or Minimum Advertised Pricing, means that the vendor set a minimum retail price that we're not allowed to violate. MAP items cannot be discounted because the decrease in price would violate that threshold.
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