N54 JB4 BMW Performance Tuner

Burger Motorsports

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N54 JB4 BMW Performance Tuner

How about up to 80hp to the wheels (100hp crank) on a completely stock car, up to 160hp to the wheels on factory turbos, or up to 350hp to the wheels on a fully modified car with larger turbo(s)? The JB4 includes a simple plug and play installation harness and is compatible with all ECU versions and transmission types. It's everything you need to take your N54 powered vehicle from mild to wild.

In addition to several performance maps which can be selected "on the fly" right from the driver's seat the JB4 includes a 100% stock bypass map, a valet mode, ethanol fuel (E85) support, progressive water/methanol injection support, racing fuel map, an auto tuning map that adjusts the JB4 mapping to your current climate, octane, vehicle condition, and modifications continuously, and for those interested an rpm by rpm user adjustable map. Other features include optional in dash gauges for boost and other engine parameters, a programmable shift light, on the fly adjustable torque limiting to aid with launches at the track, an optional 2STEP rev limiter & no lift shifting for manual transmission cars, an optional speed delimiter, and much more.

Remember the JB4 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. As you decide to modify your car further the JB4 is set up to grow with your vehicle. Whether you're racing a 100% OEM car on pump gas or a 700whp single turbo drag queen, the JB4 has the perfect mix of performance, features, flexibility, and support to ensure your car performs to the best of its potential! Made in the USA. 5 Year Warranty.

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.

Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.

Click here for the latest N54 JB4 firmware, map guide, and details.


Burger Tuning JB4 for BMW N55 Engines BMW 335i performance chip

N54 JB4 Features & Benefits 

• N54 Power gains of up to 100hp and 100tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom BMW tuning software and up to 8 maps for various fuel and modification levels
• 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
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• 91 octane fuel or better required for performance gains
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked and can be removed without a trace and resold down the road
• Made in the USA
• Free USA Shipping
• 5 year warranty


BMW 1 Series

  • 2008-2010 E82 Coupe 135i
  • 2008-2010 E88 Convertible 135i
  • 2011 E82 1M

BMW 3 Series

  • 2006-2010 E90 Sedan 335i/335ix
  • 2006-2010 E91 Touring 335i/335ix
  • 2006-2010 E92 Coupe 335i/335ix
  • 2007-2010 E93 Convertible 335i/335ix
  • 2011-2013 E92 335is

BMW 5 Series

  • 2008-2010 E60 Sedan 535i/535ix
  • 2008-2010 E61 Touring 535i/535ix

BMW X Series

  • 2008-2010 BMW E71 X6 xDrive35i

BMW Z Series

  • 2009-2016 BMW Z4 sDrive35i/is

What is a JB4?
The JB4 is a plug and 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 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.





Stock, JB4 on a completely stock automatic 135i, on 91 octane

BMW 335i performance chip

JB4 on an automatic 335i with Exhaust and BMS intake, on 93 octane

BMW 335i performance chip
JB4, Exhaust, BMS intake, BMS Flash, on 50% E85 fuel

JB4, Exhaust, BMS intake, BMS Flash, on 50% E85 fue
JB4, RB Hybrid Turbo Upgrade, Exhaust, BMS intake, BMS Flash, BMS Methanol Injection, Larger Intercooler, on 50% E85 fuel

JB4, RB Hybrid Turbo Upgrade, Exhaust, BMS intake, BMS Flash, BMS Methanol Injection, Larger Intercooler, on 50% E85 fuel

JB4 Optional Phone Software

BMW 335i performance chip

N54 JB4 Install Video
JB4 135i 335i Steering Wheel Controls Demo Video

JB4 Optional In Dash Boost Gauge/Shift Light Demo
JB4 Optional Startup Gauge Sweep

Customer Reviews

Based on 6 reviewsWrite a review


I originally had MHD Stage 2+ with FBO, Catless DP, and an intercooler. Pulls felt sloppy and unrefined. I installed JB4 in literally 15 minutes and chose map 5. Talk about mind blown. It feels like I gained at least 50 WHP on top of the refined and more efficient power output. Top of the line software. Also lessened my wastegate rattle while I decide which turbos to upgrade to.


i just installed the jb4 and didn't come home for 2 hours. my 2010 N54 335i is a whole new car. Runs like stock when driving normal and is sooo much faster when you get on it. go jb4.


Running JB4, DCI, BMS Elite charge pipe and FMIC, no cowl, BMS n54 oil catch can and love the power so far. Car sounds and runs great. Huge improvement. Recommended.


I’ve been running a JB4 on my 335i for about a year now. I’m running a fmic, dci, downpipes, stage 2 fuel it pump and MHD bef. I love being able to set the maps on the fly. The ability to clear codes is great too. My favorite feature is seeing my friends with mustangs in my rear view. The online forum support is amazing. If you are thinking of buying one, stop thinking and do it.


I was planning on keeping my BMW 335 stock because I have a built mustang I play with but picked up the BMS dual cone intake for some better sound and a few extra ponies. Then I was hooked and went back for the N54 JB4, bluetooth adapter, and BMS N54 oil catch can. The car sounds great and is so much faster. it really transformed my N54. Had it for 4 months so far with no issues. JB4 + DCI + OCC = Highly recommended!!

5 Year

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  • 5
    Great support and fast shipping

    Posted by Ala Salehb on Apr 26th 2022

    Quick shipping with support during installation. Thanks PPI for the great customer service!