BMW F Chassis N55 JB4 Tuner - M135i/ M235i/ M2/ 335i/ 435i/ 535i/ 640i/ 740i





- Description
- Reviews
- Shipping and Refund
The JB4 Tuner for F-Chassis N55 BMWs offers exceptional performance gains and a wealth of features designed for BMW enthusiasts looking for a significant power boost without permanently altering their vehicle's software. This powerful plug-and-play tuner stands out with robust capabilities, including seamless control and added functionality for both stock and modified N55 vehicles.
- Optional: For Extra Ordinary Performance with JB4 We also recommend Our N55 Downpipe
Features
- Significant Power Gains: Achieve up to 60 horsepower and 60 lb-ft of torque at the wheels (80 hp crank) on a completely stock setup. For modified vehicles, gains can reach up to 100 horsepower at the wheels (120 hp crank).
- Flexible Boost Control: Control boost by gear to maximize traction and optimize launches. Gear-dependent boost settings can be managed through the JB4 app for precise adjustments.
- E85 Ethanol Compatibility: Built-in autotuning features support varying mixtures of E85, offering flexibility for drivers looking to maximize performance using ethanol-based fuels.
- Diagnostic and Safety Tools: The JB4 allows users to read and delete diagnostic fault codes and incorporates expanded engine safety systems for added reliability.
User Control & Convenience
- Quick Plug-and-Play Installation: No complex modifications or prior stages are needed. The JB4 installs and can be removed easily without specialized tools, leaving no trace of its installation.
- In-Dash Control Capabilities: The JB4 can be toggled on and off directly from the driver’s seat. For newer models with electronic wastegate (EWG), control options can be expanded for high-performance applications.
- CANbus OBDII Integration: This integration provides real-time data monitoring, greater tuning precision, and enhanced safety protocols.
- Mobile Connectivity: Easily manage JB4 settings, record data, switch maps, and receive firmware updates through your smartphone (via JB4 Mobile) or a Windows laptop using the BMS data cable.
Improved Functionality and Safety
- Exhaust Control and Boost Monitoring: Integrated exhaust flap controls for certain applications and extensive real-time monitoring of up to 40 engine parameters ensure smooth, safe, and high-performance operation.
- Firmware Updates and Adaptability: The JB4 is continually supported with free firmware updates, adding features, enhancing maps, and optimizing performance.
- No VIN Locking: Users can remove, resell, or transfer the JB4 to another compatible vehicle without restrictions.
Fuel and Compatibility:
- 91 Octane Requirement: To achieve advertised performance gains, 91 octane or higher fuel is required.
- Retained Fuel Economy: During normal driving conditions, fuel economy remains unaffected by the JB4 installation.
Wirelessly Connect to your JB4: Grab one of our smartphone connection options to wirelessly connect the JB4 BMW tuner to your Bluetooth 4.0 compatible iOS or Android device. 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.
JB4 Mobile by DMAC was released in 2014 and has become the gold standard for phone-to-tuner integration with its unique gauge display options/themes and advanced security systems. The JB4 Mobile app is purchased separately for $29 and requires the JB4 Mobile adapter.
JB4PRO by Burger Motorsports is our brand-new in-house adapter designed from the ground up for ease of use and reliability. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look. The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns. More information on the differences between the app options is available here.
Fitment
BMW 1 Series
- 2012-2013 N55 BMW F20/F21 M135 (JB4_PWG)
- 2014-2015 N55 BMW F20/F21 M135 (JB4_EWG)
BMW 2 Series
- 2014-2015 N55 BMW F22/F23 M235i (JB4_EWG)
- 2016-2017 N55 BMW F87 M2 (JB4_EWG)
BMW 3 Series
- 2012-2013 N55 BMW F30/F31 335i including xDrive, Active Hybrid, xDrive GT (JB4_PWG)
- 2014-2015 N55 BMW F30/F31 335i including xDrive, Active Hybrid, xDrive GT (JB4_EWG)
BMW 4 Series
- 2014-2016 F32/F33/F36 BMW 435i including xDrive and Gran Coupe (JB4_EWG)
BMW 5 Series
- 2011 N55 BMW F10/F11/F07 535i including xDrive, ActiveHybrid 5, xDrive 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)
- 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 including xDrive and Gran Coupe (JB4_F10_A)
- 2012-2013 N55 BMW F06/F12/F13 640i including xDrive and Gran Coupe (Either JB4_PWG for Type B or JB4_F10_A for Type A, check sensor using reference photo)
- 2014-2016 N55 BMW F06/F12/F13 640i including xDrive and Gran Coupe (JB4_EWG)
BMW 7 Series
- 2013-2018 N55 BMW F01/F02 740i including xDrive (JB4_EWG)
BMW X Series
- 2011-2013 N55 BMW F25 X3 including xDrive (JB4_PWG)
- 2014-2017 N55 BMW F25 X3 including xDrive (JB4_EWG)
- 2014-2018 N55 BMW F15 X5 including xDrive (JB4_EWG)
- 2014-2018 N55 BMW F16 X6 including xDrive (JB4_EWG)
- 2014-2018 N55 BMW X4 M40i including xDrive (JB4_EWG)
- Purchase E Chassis N55 JB4
Warranty & Support: The JB4 tuner comes with a 5-year warranty and is made in the USA, reflecting its durability and commitment to quality. Users can also benefit from free USA shipping.
Overall, the JB4 is a comprehensive tuning solution, perfect for enhancing performance while maintaining safety, drivability, and convenience for a broad spectrum of F-Chassis N55 BMW vehicles.
Wastegate Identification Chart. Pneumatic (PWG) or Electronic (EWG)?
What is a JB4?
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.
DYNO RESULTS
F32 435i with BMS intake, exhaust

F22 M235i with intake, exhaust

F30 335i with BMS intake, exhaust

VIDEOS
Change maps on the fly
Control your roar! Open and close your exhaust flapper valves.
INSTALL VIDEOS
JB4 N55 435i EWG install video
JB4 N55 335i/335iX PWG install video
JB4 N55 BMW F10 535i/535iX install video
Handling
Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.
For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.
Expedited shipping applies only once the item is ready to ship.
Return
You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.
To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.
You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders
Non-returnable items:
- Burger Motorsports (BMS) products
- Used items
- Air Intakes
- Hazardous materials, flammable liquids, or gases
- Discounted items and gift cards other than "PALENON PERFORMANCE" brand
Exchanges
Return the item and place a new order once approved.
Refunds
Approved refunds are issued to the original payment method. A restocking fee is 20% will be applied. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.
Cancellations
Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom, specialized items or pre-order items canceled within their lead time are also subject to this fee. Will also incur a 10% restocking fee.
Damaged or incorrect items
Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.
Disputes / Chargebacks
Our legal team is fully prepared to take stringent action against you for filing a baseless claim and initiating a fraudulent chargeback. This will lead to civil or criminal proceedings, which would require you to engage with our attorneys in our jurisdiction.
It is crucial to understand that filing a false chargeback is a serious offense, punishable by substantial fines or imprisonment. Potential penalties for fraudulent chargebacks can include one to three years in prison and fines ranging from $1,000 to $10,000. We treat all chargebacks with the utmost seriousness, regardless of the amount, as this is classified as a felony.
We will compose all necessary information to send your account to a collections agency and request that you be served once our lawyers organize the evidence and file a case against you.
The JB4 Tuner for F-Chassis N55 BMWs offers exceptional performance gains and a wealth of features designed for BMW enthusiasts looking for a significant power boost without permanently altering their vehicle's software. This powerful plug-and-play tuner stands out with robust capabilities, including seamless control and added functionality for both stock and modified N55 vehicles.
- Optional: For Extra Ordinary Performance with JB4 We also recommend Our N55 Downpipe
Features
- Significant Power Gains: Achieve up to 60 horsepower and 60 lb-ft of torque at the wheels (80 hp crank) on a completely stock setup. For modified vehicles, gains can reach up to 100 horsepower at the wheels (120 hp crank).
- Flexible Boost Control: Control boost by gear to maximize traction and optimize launches. Gear-dependent boost settings can be managed through the JB4 app for precise adjustments.
- E85 Ethanol Compatibility: Built-in autotuning features support varying mixtures of E85, offering flexibility for drivers looking to maximize performance using ethanol-based fuels.
- Diagnostic and Safety Tools: The JB4 allows users to read and delete diagnostic fault codes and incorporates expanded engine safety systems for added reliability.
User Control & Convenience
- Quick Plug-and-Play Installation: No complex modifications or prior stages are needed. The JB4 installs and can be removed easily without specialized tools, leaving no trace of its installation.
- In-Dash Control Capabilities: The JB4 can be toggled on and off directly from the driver’s seat. For newer models with electronic wastegate (EWG), control options can be expanded for high-performance applications.
- CANbus OBDII Integration: This integration provides real-time data monitoring, greater tuning precision, and enhanced safety protocols.
- Mobile Connectivity: Easily manage JB4 settings, record data, switch maps, and receive firmware updates through your smartphone (via JB4 Mobile) or a Windows laptop using the BMS data cable.
Improved Functionality and Safety
- Exhaust Control and Boost Monitoring: Integrated exhaust flap controls for certain applications and extensive real-time monitoring of up to 40 engine parameters ensure smooth, safe, and high-performance operation.
- Firmware Updates and Adaptability: The JB4 is continually supported with free firmware updates, adding features, enhancing maps, and optimizing performance.
- No VIN Locking: Users can remove, resell, or transfer the JB4 to another compatible vehicle without restrictions.
Fuel and Compatibility:
- 91 Octane Requirement: To achieve advertised performance gains, 91 octane or higher fuel is required.
- Retained Fuel Economy: During normal driving conditions, fuel economy remains unaffected by the JB4 installation.
Wirelessly Connect to your JB4: Grab one of our smartphone connection options to wirelessly connect the JB4 BMW tuner to your Bluetooth 4.0 compatible iOS or Android device. 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.
JB4 Mobile by DMAC was released in 2014 and has become the gold standard for phone-to-tuner integration with its unique gauge display options/themes and advanced security systems. The JB4 Mobile app is purchased separately for $29 and requires the JB4 Mobile adapter.
JB4PRO by Burger Motorsports is our brand-new in-house adapter designed from the ground up for ease of use and reliability. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look. The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns. More information on the differences between the app options is available here.
Fitment
BMW 1 Series
- 2012-2013 N55 BMW F20/F21 M135 (JB4_PWG)
- 2014-2015 N55 BMW F20/F21 M135 (JB4_EWG)
BMW 2 Series
- 2014-2015 N55 BMW F22/F23 M235i (JB4_EWG)
- 2016-2017 N55 BMW F87 M2 (JB4_EWG)
BMW 3 Series
- 2012-2013 N55 BMW F30/F31 335i including xDrive, Active Hybrid, xDrive GT (JB4_PWG)
- 2014-2015 N55 BMW F30/F31 335i including xDrive, Active Hybrid, xDrive GT (JB4_EWG)
BMW 4 Series
- 2014-2016 F32/F33/F36 BMW 435i including xDrive and Gran Coupe (JB4_EWG)
BMW 5 Series
- 2011 N55 BMW F10/F11/F07 535i including xDrive, ActiveHybrid 5, xDrive 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)
- 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 including xDrive and Gran Coupe (JB4_F10_A)
- 2012-2013 N55 BMW F06/F12/F13 640i including xDrive and Gran Coupe (Either JB4_PWG for Type B or JB4_F10_A for Type A, check sensor using reference photo)
- 2014-2016 N55 BMW F06/F12/F13 640i including xDrive and Gran Coupe (JB4_EWG)
BMW 7 Series
- 2013-2018 N55 BMW F01/F02 740i including xDrive (JB4_EWG)
BMW X Series
- 2011-2013 N55 BMW F25 X3 including xDrive (JB4_PWG)
- 2014-2017 N55 BMW F25 X3 including xDrive (JB4_EWG)
- 2014-2018 N55 BMW F15 X5 including xDrive (JB4_EWG)
- 2014-2018 N55 BMW F16 X6 including xDrive (JB4_EWG)
- 2014-2018 N55 BMW X4 M40i including xDrive (JB4_EWG)
- Purchase E Chassis N55 JB4
Warranty & Support: The JB4 tuner comes with a 5-year warranty and is made in the USA, reflecting its durability and commitment to quality. Users can also benefit from free USA shipping.
Overall, the JB4 is a comprehensive tuning solution, perfect for enhancing performance while maintaining safety, drivability, and convenience for a broad spectrum of F-Chassis N55 BMW vehicles.
Wastegate Identification Chart. Pneumatic (PWG) or Electronic (EWG)?
What is a JB4?
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.
DYNO RESULTS
F32 435i with BMS intake, exhaust

F22 M235i with intake, exhaust

F30 335i with BMS intake, exhaust

VIDEOS
Change maps on the fly
Control your roar! Open and close your exhaust flapper valves.
INSTALL VIDEOS
JB4 N55 435i EWG install video
JB4 N55 335i/335iX PWG install video
JB4 N55 BMW F10 535i/535iX install video
Handling
Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.
For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.
Expedited shipping applies only once the item is ready to ship.
Return
You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.
To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.
You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders
Non-returnable items:
- Burger Motorsports (BMS) products
- Used items
- Air Intakes
- Hazardous materials, flammable liquids, or gases
- Discounted items and gift cards other than "PALENON PERFORMANCE" brand
Exchanges
Return the item and place a new order once approved.
Refunds
Approved refunds are issued to the original payment method. A restocking fee is 20% will be applied. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.
Cancellations
Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom, specialized items or pre-order items canceled within their lead time are also subject to this fee. Will also incur a 10% restocking fee.
Damaged or incorrect items
Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.
Disputes / Chargebacks
Our legal team is fully prepared to take stringent action against you for filing a baseless claim and initiating a fraudulent chargeback. This will lead to civil or criminal proceedings, which would require you to engage with our attorneys in our jurisdiction.
It is crucial to understand that filing a false chargeback is a serious offense, punishable by substantial fines or imprisonment. Potential penalties for fraudulent chargebacks can include one to three years in prison and fines ranging from $1,000 to $10,000. We treat all chargebacks with the utmost seriousness, regardless of the amount, as this is classified as a felony.
We will compose all necessary information to send your account to a collections agency and request that you be served once our lawyers organize the evidence and file a case against you.
Recently Viewed
Recommendation
5 Inch Gen3 BMW B58 Downpipe - 2025+ M340i / M440i/ 540i/ 740i/ X3/ X5/ X6/ X7
$462.00
$525.00
2015-2019 BMW F30 340i B58 Full Valve Performance Exhaust System | Palenon Performance
$2,176.00
$2,637.00
$594.00
$739.00
$343.00
$396.00
$923.00
$1,317.00
N26 & N20 Race Downpipe for F Series BMW 320i, 328i, 420i, 428i, 528i, 228i, 220i
$304.00
$383.00
$871.00
$1,055.00
$528.00
$660.00

