What Is A Jb4 For BMW? - GearShifters

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.

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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.

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.

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.

Describe the JB4 chip.

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.

JB4 CARB is it legal?

For all 2016+ Infiniti Q50/Q60 3.0L Turbo Luxe, Sport, Silver Sport, and Red Sport models, JB4 without gasoline wires is CARB approved under Executive Order (EO) No.D-744-6 and is offered for sale in all 50 States.

If you want the billet enclosure with gasoline wires option but don’t live in California, you may get the JB4 with fuel wires from HERE.

On a factory Infiniti Q50/Q60 3.0T, there could be power increases of up to 100 horsepower and 120 torque.

The JB4 Tuner for Infiniti Q50/Q60 3.0T plug and play tuner connects to two easily accessible engine bay sensors and works with your factory DME tuning to remap your boost, timing, and fueling for optimum performance and lessened turbo lag. Your ECU can properly map timing and fueling for the increased boost levels since the JB4 modifies the ECU boost control signals, which allows it to change boost levels, but it does not change the ECU manifold boost reference. The final product operates as smoothly as stock with higher boost targets when the throttle is applied heavily. Using specialized 10 bit digital to analog converters, the JB4’s 64 MHz processor enables sensors to be sampled 800 times per second, resulting in a fluid and potent performance.

The JB4 system adds OBDII CANbus for enhanced performance mapping, as well as a number of practical features including data logging, boost by gear, and on-the-fly map adjustments, in comparison to the less expensive Stage1 system. The most effective tuning system for the VR30 platform is simply JB4.

Depending on the fuel quality, power gains with the Red Sport model, which runs more boost out of the factory, vary from 30 to 50 horsepower, while the Silver Sport, which is highly detuned out of the factory, can gain up to 60 to 100 horsepower depending on the fuel quality. The boost pressure over stock can be raised more safely and with a greater power gain as octane level increases.

Depending on your fuel quality, you should run 1-2 psi over the flashed boost target when utilizing the JB4 in conjunction with an aftermarket flash map.

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. Additional JB4 Mobile app purchase necessary.

Gains in power, features, and advantages • Up to 100 horsepower and 120 pound-feet of torque added to a stock vehicle’s wheels All driving modes are compatible, and normal driving does not affect fuel economy. JB4 Mobile is compatible for smartphone logging, tuning changes, and adjustment. CANbus integration offers unmatched tuning features and performance. The engine runs as smoothly as stock, just as it should have from the factory. Tuning maps that are compatible with ethanol (E85) can read and delete fault codes, are not VIN-locked, and can be removed covertly and later resold. 5 year warranty; free shipping to the USA; and made in the USA

What does a JB4 bring to HP?

The JB4 is the most sophisticated and fully equipped tuning system for your B58 and B48 car currently on the market. For a B58, bolt-on parts, higher octane, E85 mixes, and larger turbos can increase power by up to 80 horsepower to the wheels (100 horsepower crank) and up to 40 horsepower to the wheels (55 horsepower crank), respectively.

The JB4 offers several features not found with any other tune and comes with a straightforward plug-and-play installation harness for easy installation and removal. Additionally, there are many other features available, such as on-the-fly in-dash map switching between factory and different performance maps, optional in-dash gauge displays for boost, boost limiting by gear for better traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, optional direct EWG control to prevent throttle closure with exhaust modifications, exhaust flapper control, and much more. Other more expensive tuners might assert that their technology matches that of the JB4, but upon closer inspection, they will not have many, if any, of the JB4’s features.

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. A REV3 mobile phone adapter or BMS DATA connection should be used if you want to log data or add new capabilities as they become available. The JB4 does not require any user setup or modification. At boot up, the JB4 automatically distinguishes between the B46, B48, and B58 versions, making setup and installation simple.

Please take note that we have not yet implemented the JB4 instructions to allow in-dash control for 2018+ G chassis vehicles with the digital dash layout, but we will do so via a free firmware update whenever those are created. For any map or setting changes before then, a JB4 mobile adapter or BMS data cable is needed.

For all 2016-2018 BMW 230i, 330i, 430i, 530i, 340i, 440, 740, M240, and X1 applications, JB4 B58 is CARB-approved under Executive Order (EO) No.D-744-4.

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 tuner reliable?

After installing the JB4, I am unable to return to stock. For 90% of folks who need more power without incurring the costs of designing a more durable engine, I believe the JB4 is a great purchase. I give this unit an A+ and heartily endorse it for the remaining 90%.

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.