Power gains of up to 40hp and 40tq to the wheels on a stock vehicle.

This 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 Stage 1 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. Stage1 features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10 bit digital to analog converters, ensuring smooth and powerful performance.

No ECU flash needed and compatible with locked 🔒 ECUs

Boost added is user adjustable with the optional BMS data cable with the default boost gain set to 3.0 psi over stock. The Stage1 can be used by itself or in conjunction with a flash tuning map for adding extra boost where desired. Installation takes under a minute and it removes just as quickly without a trace when needed. Fuel economy during normal driving is unchanged.

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 raise the boost pressure over stock and the larger the power gain. For Red Sport we suggest a maximum of 3psi over stock on pump fuels and 4psi over stock on E85 mixtures or unleaded race gas, while Silver Sport can run up to 5psi over stock on good 93 octane fuel, and up to 7psi over stock on E85 mixtures or unleaded race gas. For those using the Stage1 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.

Wirelessly Connect to your JB4: Grab our all-new JB4 PRO smartphone connection to wirelessly connect the JB4 tuner to your Bluetooth 4.0 compatible iOS or Android device. This option allows 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. 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. For more info on how to use the JB4PRO free app click here.

JB4 Features & Benefits

JB4 Vehicle Fitment

• 2016+ Infiniti Q50 2.0L Turbo Pure
• 2016-2022 Infiniti Q60 2.0L Turbo Pure
• 2016-2019 Infiniti QX30 2.0L Turbo

JB4 Map Guide

Map 0: Disables tuner
Map 1: Up to 4psi over stock peak, suitable for all 91 octane+ fuels
Map 2: Up to 5psi over stock peak, suggested for 93octane+
Map 3: User definable fixed boost profile map (boost safety used to determine fixed boost over stock)
Map 4: Stock performance with CANbus active for logging
Map 5: 6.5psi over stock peak, holding more power to redline, suggested for E30+ or unleaded race gas mixtures
Map 6: User definable map, boost over stock entered on user adjustment page
Map 7: 7psi over stock peak, suitable for unleaded race gas
Map 8: Coming soon - Water/Meth integration progressive map

What is a JB4? 

Is the JB4 a real tune?

Yes the JB4 is a real tune. By tapping into specific sensors and CANbus for real time vehicle data the JB4 is able to alter your boost, timing, AFR, and/or fuel trims, to a similar degree an ECU reflash would, but without the vehicle ever knowing its been tuned. The result is safe, smooth, and significant power and torque gains while retaining your factory safety systems and without having to unlock/flag your ECU.

DYNOS

LOGS

Map 0 log



JB4 log