Power gains of up to 100hp and 120tq to the wheels on a stock Infiniti Q50/Q60 3.0T

The JB4 Tuner for Infiniti Q50/Q60 VR30 3.0T plug and play tuner attaches to two easy-to-access sensors in the engine bay and works with your factory DME tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. The JB4 manipulates the ECU boost control signals allowing it to modify boost levels but does not manipulate the ECU manifold boost reference, allowing your ECU to properly map timing and fueling for the higher boost levels. The end result is something that runs as smoothly as stock only with higher boost targets under heavy throttle. JB4 features a 64mhz processor allowing sensors to be sampled 1000 times per second using dedicated 10 bit digital to analog converters, ensuring smooth and powerful performance.

Non-CARB compliant JB4 includes our billet JB4 enclosure and fuel control wires!

No ECU flash needed and compatible with locked 🔒 ECUs

Compared to the lower cost Stage1 the JB4 system adds OBDII CANbus for increased performance mapping, a variety of useful features such as data logging, boost by gear, optional fuel control wires for AFR adjustment, and on-the-fly map changes. JB4 is simply the most capable tuning system available for the VR30 platform.

Power gains with the Red Sport model which runs more boost from the factory are in the 30-50hp range depending on fuel quality, while the Silver Sport which is heavily detuned from the factory can gain up to 60hp-100hp depending on the fuel quality. The higher the octane the higher you can safely raise the boost pressure over stock and the larger the power gain.

For those using the JB4 in conjunction with an aftermarket flash map normally, you’ll want to run 1-2psi over the flashed boost target depending on your fuel quality.

Join the discussion on JB4tech.com here.

JB4 is CARB Approved Under Executive Order (EO) No.D-744-6 for all 2016+ Infiniti Q50/Q60 3.0L Turbo Luxe, Sport, Silver Sport, Red Sport

JB4 Power Gains, Features, & Benefits

• Power gains of up to 100hp and 120tq to the wheels on a stock vehicle

• Improves 0-60 times and 1/4 mile times

• Preloaded with custom JB4 Infiniti Q50/Q60 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

• Designed and assembled in the USA

• 5 year warranty

JB4 Vehicle Fitment

• 2016+ Infiniti Q50 VR30 3.0L twin-turbo V6 Turbo Luxe, Sport, Silver Sport, Sensory, Red Sport 400

• 2016-2022 Infiniti Q60 VR30 3.0L twin-turbo V6 Turbo Luxe, Sport, Silver Sport, Sensory, Red Sport 400

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 and is sold in over 67 countries worldwide.

Download Infiniti Q50/Q60 JB4 Install Guide CARB APPROVED (.PDF)

DYNO RESULTS

Infiniti Q50 Silver Sport, JB4 Tuned + 93 octane

Infiniti Red Sport, JB4 Tuned + 93 octane

Infiniti Q50 Red Sport, JB4 Tuned + 30% E85 Mixture

Silver Sport, 30% E85 Mixture

2019 Infiniti Q50 Silver Sport, JB4 Tuned + 30% E85