Is the JB4 hard to install?

The JB4 is very easy to install, for a basic install you can do OBDII and TMAP sensors in 15-20 minutes. The JB4 removes without a trace when needed and provides a lot of options not possible via flash only. It’s a tuning tool so you can also use it with a flash map.

How long does it take to install JB4?

With the JB4 you plug it into sensors in the engine bay, usually taking 20 to 30 minutes the first time as you learn where each sensor is for your specific model. Once you’ve installed it once, most JB4 systems can be fully removed in less than 10 minutes.

Is JB4 an ECU tune?

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.

Can BMW detect JB4?

Bmw will detect your JB4 if they dig deep enough. Read the new ISTA thread and how easy it is to flag your car now.

Can you change JB4 maps while driving?

Yes, JB4 maps can be changed while driving using the steering wheel controls or JB4 mobile app.

How much HP does JB4 add?

In short: yes. A general rule of thumb is 10hp for every 1 psi of boost added.

Can a dealer detect JB4?

Just like few people already said, anything is detectable. Flash tunes are detectable if your tuner opens or drills the DMEs. Also JB4 is detectable if the dealer knows what he is looking for. This is what we always tell all of our customers.

How much HP does JB4 add n55?

80hp
Power gains of up to 80hp on a stock vehicle without the risks of flashing!

Can BMW see JB4?

Can BMW detect a piggyback?

BMW can see engine parameters up to and at the point of failure, which means if you’re running a piggyback, the parameters won’t be within stock ranges and they will know.

How much HP can JB4 add?

In short: yes. A general rule of thumb is 10hp for every 1 psi of boost added. That’s a rough estimate, so take it with a grain of salt, but yah. That plus theoretically lower IATs with the FMIC and a freer flowing turbo with the DP and yah, 60hp is about right.

How much horsepower can a JB4 add?

Power gains of up to 100hp on a stock vehicle without the risks of flashing! Units shipped 3/5/2021 or later include a free electronic wastegate (EWG) connector preinstalled in the JB4 harness! The JB4 is the most advanced and highly featured tuning system available for your B58 and B48 vehicle.

How much power does a JB4 make?

What I have seen people pick-up from a JB4 with stock components has been about 30-60 whp depending on the map. So, I think the car in stock form should be good for 400-420 hp at the crank which gets it pretty much to M4 level.

Is JB4 detectable BMW?

Does JB4 tune void BMW warranty?

The JB+ or JB4 does not void your warranty. However if there is a failure or a part that could be attributed to the aftermarket device, that warranty claim could well be denied.

Does JB4 void BMW warranty?

How much HP does JB4 add N55?

Will JB4 void my BMW warranty?

Can BMW dealers detect JB4?

Is the jb4 easy to install?

The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune.

How do I connect my jb4 device to my BMS data cable?

Disconnect the negative battery cable in the trunk, open the JB4 enclosure by removing the screws, remove the plastic shell covering on your BMS DATA Cable or JB4 Mobile kit, and using short screws either already in the JB4 board or included with the cable option attach the cable to the small connector on the JB4 board as shown below.

Does the jb4 need data logging?

The JB4 works wonders whether you are running the JB4 as a stand-alone tune or coupling it with a back-end flash tune. Data logging is essential to ensure your tuned and modified BMW N54 is running well. However, data logging may look complicated and overwhelming at first sight. With so many parameters where do you even start?

What is the fail-safe temperature on the jb4?

The fail-safe on the JB4 is set to 700psi and will bump you into Map 4 if values drop below 700psi at WOT. As an additional note, when the N54 is not at WOT the value typically remains at 5 (750psi). IGN_1 & IGN_2-6 Ignition advance measured in each individual cylinder.