What Is Jb4 BMW?

BMW / By

1 Series BMW

  • E82 Coupe 135i from 2008 until 2010
  • E88 Convertible 135i, 2008–2010
  • 2011 E82 1M
  • E90 Sedan 335i/335ix, 2006–2010
  • E91 Touring 335i/335ix, 2006–2010
  • E92 Coupe 335i/335ix, 2006–2010
  • E93 Convertible 335i/335ix 2007–2010
  • 2011-2013 E92 335is
  • E60 Sedan 535i/535ix, 2008–2010
  • E61 Touring 535i/535ix 2008–2010
  • BMW E71 X6 xDrive35i, 2008–2010
  • BMW Z4 sDrive35i/is, 2009–2016

A JB4 is what? For cars with turbochargers, there is a plug-and-play tune called the JB4. The JB4 tuner attaches between the sensors and DME/ECU (computer) of your car and modifies performance through these connections, resulting in a considerably faster automobile. The JB4 distinguishes 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, even though it is not the only tuning system that functions in this way. BMS often releases free firmware and mapping upgrades that enhance performance when continuing development permits. The JB4 system can also be easily removed, switched between cars, and later sold because it is not VIN-locked to your car. The JB4 has been the industry benchmark for plug and play turbocharged performance tuning for more than 10 years. It has been frequently mimicked but never equaled.

Fastest is JB4

JB4 is a plug-and-play chip tune for vehicles with turbochargers. Up to 8 maps for different fuel and modification levels are already preloaded on the JB4 along with proprietary tuning software. Through these connections, the JB4 is installed between the sensor and DME/ECU (computer) of your automobile and controls how the vehicle performs. installs and removes undetectably. Five-year guarantee. In the USA, delivery is free. Produced in the USA.

Select a tuner

A JB4 is what? For cars with turbochargers, there is a plug-and-play tune called the JB4. The JB4 tuner attaches between the sensors and DME/ECU (computer) of your car and modifies performance through these connections, resulting in a considerably faster automobile. The JB4 distinguishes 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. Although it’s not the only tuning system that functions in this way, it is the most common. BMS often releases free firmware and mapping upgrades that enhance performance when continuing development permits. The JB4 system may also be swiftly and covertly removed, switched between cars, and later sold because it is not VIN-locked to your car. The JB4 has been the industry benchmark for plug and play turbocharged performance tuning for more than 10 years. It has been frequently mimicked but never equaled.

The legendary JB4 performance tuner is produced by Burger Motorsports. Since 2007, we have led the way in performance tuning, intakes, and modifications for race vehicles with street-inspired designs.

Parts designated for competition use only are clearly marked as such on the product listing page and are only permitted for use in accordance with the rules outlined on our Emissions Notice to Customers page.

effortless plug-and-play installation and instant power

Are you prepared to advance your BMW N20 turbo? How about a fully stock car with up to 50 horsepower to the wheels (65 horsepower crank) or a fully modified car with up to 100 horsepower to the wheels (120 horsepower crank)? The JB4 incorporates several features not available on any other tune and has a straightforward plug-and-play installation harness for uncomplicated installation. Included in this are the ability to turn on/off tuning from the driver’s seat, gear-dependent boost control to aid in traction, E85 compatibility, built-in diagnostic code reading/deleting, expanded engine safety systems, free firmware updates, in-dash boost gauge, the capacity to operate the exhaust flapper using your BC button, and a lot more.

There are no prerequisite stages or further changes needed for the JB4. Installing the JB4 is the only alteration you need to make in order to start experiencing a completely new, quick, and smooth racing environment. For more experienced enthusiasts, you may connect a laptop or smartphone via the BMS DATA or JB4 Mobile cable for more gauges, data logging, and free firmware updates as we introduce new features and maps. Furthermore, keep in mind that some F10 and X chassis models need a JB4 mobile adapter or BMS data cable to pick option bit#1 and activate the in-dash controls on those models.

In contrast to flash maps, which permanently overwrite your DME, the JB4 is a fully plug-and-play device that installs and removes in a matter of minutes at home without the need for special tools. With the JB4, your DME is never aware that it is operating above the factory power levels. Additionally, the JB4 is not VIN locked and can be transferred to your next vehicle or sold when you’re ready to switch things up.

Use the JB4 Mobile Connect Kit to wirelessly connect the JB4 to your Bluetooth 4.0-enabled iOS or Android device, or use the BMS data cable to connect the JB4 to your Windows laptop. Both choices let you capture and analyze vehicle and tuning data, alter JB4 performance maps, and update JB4 firmware when we provide free updates with updates, more potent maps, and unreleased features. Additionally necessary is a separate JB4 Mobile app purchase.

NOTES: The F series N20 JB4 differs significantly from the X1 & Z4 N20 JB4. They feature a distinct CAN mounting location and use unique firmware (with full dash control). The firmware for the X1/Z4 series N20 is listed below. X1 N20 JB4 Details & installation video here.

A JB4 is what?

For cars with turbochargers, there is a plug-and-play tune called the JB4. The JB4 tuner attaches between the DME/ECU (computer) and the sensors in your car, altering performance through these connections to speed up your car. The JB4 distinguishes 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. Although it’s not the only tuning system that functions in this way, it is the most common. BMS often releases free firmware and mapping upgrades that enhance performance when continuing development permits. The JB4 system can also be easily removed, switched between cars, and later sold because it is not VIN-locked to your car. The JB4 has been the industry benchmark for plug and play turbocharged performance tuning for more than 10 years. It has been frequently mimicked but never equaled.

How does JB4 operate?

The JB4 piggyback tuning box deceives the engine ECU into believing there is true boost by intercepting sensor information from all over the engine. BMW uses an ECU regulating parameter that is controlled by torque and load rather than boost.

JB4 can see more of what the ECU is doing thanks to CANBUS monitoring, which creates a sort of closed loop between the tuning box and the ECU.

If JB4 detects a fault, it can enter bypass mode before the ECU issues errors or enters limp mode thanks to fail safe mode, which is located above CANBUS.

All tuning boxes employ additive mapping, or signal interrogation, in order to effectively layer boost onto the ECU boost profile. Competitors of JB4 have an additive boost cap of 4–4.5 psi, however JB4 map 2 with CANBUS connection has an additive boost cap of +6 psi.

Absolute maps – JB4 has the ability to adjust the stacking boost profile for maps 5, 6, and 7. Map 7 is the race fuel high boost map.

A decent remap is more complex than a tuning box since, when done correctly, it will increase the ECU’s load/torque limits and redefine the boost parameters. Although bootmod3 is expanding swiftly for the F series platform and is the route I would take if starting from fresh customizing my car, despite the fact that remap or BM3 require to open up the ECU to overcome encryption, it costs almost twice as much.

The thread below on this site compares the stats of my jb4 car with those of two remapped cars.

Describe JB4 N54.

How about up to 160 horsepower at the wheels on factory turbos, up to 350 horsepower at the wheels on a fully upgraded car with larger turbo(s), or up to 80 horsepower to the wheels (100 horsepower crank) on a stock car? The JB4 is compatible with all ECU versions and transmission types and comes with a straightforward plug-and-play installation harness. It has everything your N54-powered vehicle might possibly need to get from mild to wild.

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 continuously adapts the JB4 mapping to your current climate, octane, vehicle condition, and modifications, and for those interested in a rpm by rpm user adjustable map. These are in addition to several performance maps that can be selected “on the fly” right from the driver’s Other features include an optional speed delimiter, an optional 2STEP rev limiter, on-the-fly adjustable torque limiting to help with launches at the track, available in-dash displays for boost and other engine information, a programmed shift light, and much more.

Keep in mind that the JB4 does not need any more adjustments or earlier phases. Installing the JB4 is the only alteration you need to make in order to start experiencing a completely new, quick, and smooth racing environment. The JB4 is designed to expand along with your automobile as you decide to customize it further. The JB4 has the ideal balance of performance, features, adaptability, and support to ensure your car performs to the best of its abilities whether you’re racing a 100% OEM car on pump gas or a 700whp single turbo drag queen! Produced in the USA. Warranty for 5 years.

It should be noted that this product is not permitted for sale or usage in the state of California and is not CARB (California Air Resource Board) exempt.

Does JB4 affect the outcome?

Performance: The JB4 can dramatically improve performance, entirely altering your car. But because it uses the manufacturer flash tables, it is also more constrained than a flash tune.

Which is superior, JB4 or RaceChip?

Racechip is SUPER Quality, easy to install, and will easily save 0.80 seconds off of your 0-100 mph pace. If you want to push boost and parts, JB4 will add more average and peak power and go quicker than RaceChip.

Which is superior, JB4 or MHD?

  • For larger turbos, it cannot be used as a standalone tune.
  • The stock ECU timing table and fuelling are limited

The JB4’s drawbacks might not matter if back-end flash tunes combined with the JB4 resolve these problems. For the JB4, MHD provides certain back-end flash maps that are quite affordable. The timing, VANOS, and fueling are moved to the flash side by the back-end flash, but the JB4 keeps its more precise boost control, in-dash gauges, E85 autotuning, and many safety features.

Is JB4 a warranty breaker?

Your warranty is not voided by the JB+ or JB4. However, a warranty claim may be rejected if a malfunction or a component can be linked to an aftermarket item.

Can JB4 song be found?

He continues to assure me that the JB4 “ARE” in fact detectable (I immediately repent the question). The vehicles have a fail-safe reading for the pressure levels obtained from the ECU and other sources, and if they are off, they are likely to flag your vehicle even before you arrive to make a warranty claim.

How can I link my phone to my JB4?

Your phone can wirelessly connect to and control your JB4! It works with every JB4 product. You only need to connect it to the JB4 where your BMS DATA cable joins, use the included connectors to attach the power and ground wire to the JB4 harness, then buy the JB4 Mobile app to get started.