[hevykevy420]

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Leftover from my 328i and finally putting this up FS (also listed on fleabay). Compatible with PWG and EWG N20 engines and has the E85 harness connector also. Works great, no issues easy to install and uninstall. I'll throw the USB connector in with full price offer.

Instant power with easy plug & play installation
Ready to take your BMW N20 turbo to the next level? How about up to 50hp to the wheels (65hp crank) on a completely stock car or up to 100hp to the wheels (120hp crank) on a fully modified car? The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Including the ability to enable/disable the tuning from the drivers seat, gear dependent boost control to help with traction, E85 compatibility, built in diagnostic code reading/deleting, expanded engine safety systems, free firmware updates, in dash boost gauge, the ability to control the exhaust flapper using your BC button, and much more.

The JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. For more advanced enthusiasts the BMS DATA or JB4 Mobile cable allows you to connect a laptop or smartphone for additional gauges, data logging, and free firmware updates as we add new features and maps.

The JB4 is a full plug and play device that installs and removes in minutes at home without special tools and unlike flash maps that permanently write over your DME with the JB4 your DME is never aware it's running more than the factory power levels. And when you're ready to change things up the JB4 is not VIN locked and can be moved to your next vehicle or resold.

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow 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. Separate JB4 Mobile app purchase also required.

NOTES: The X1 & Z4 N20 JB4 is very different than the F series N20 JB4. They use special firmware (with full dash control) and have a different CAN mounting location. The firmware is below and labeled for the X1/Z4 series N20. X1 N20 JB4 Install video & details here.

JB4 Features & Benefits
• Power gains of up to 50hp and 60tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom BMW tuning software and up to 8 maps for various fuel and modification levels
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• Includes the rugged JB4 billet aluminum enclosure for protection
• 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
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• 91 octane fuel or better required for performance gains
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked and can be removed without a trace and resold down the road
• Made in the USA


APPLICATIONS
2 Series
• 2014-2016 2 Series F22/F23 220/228i N20 & N26 2.0L TURBO 4 CYL - all vehicles select Electronic Wastegate version

3 Series
• 2012-2016 3 Series F30/F31 320/328 N20 & N26 2.0L TURBO 4 CYL

4 Series
• 2014-2016 4 Series F32/F33 420/428 N20 & N26 2.0L TURBO 4 CYL - all vehicles select Electronic Wastegate version

5 Series
• 2011-2016 5 Series F10 520/528 N20 & N26 2.0L TURBO 4 CYL

X Series
• 2011–2017 F25 X3 xDrive20i, xDrive28i 2.0L TURBO 4 CYL

E chassis X1 and Z4
• 2013-2016 E89 Z4 28i 2.0L TURBO 4 CYL - select E Series X1 & Z4 in dropdown
• 2013-2015 E83 X1 28i/iX 2.0L TURBO 4 CYL - select E Series X1 & Z4 in dropdown

What is a JB4?
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. 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 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.

[j.f.leonard]

PWG or EWG? Also, do you need any bolt ons for this? I have the BMS stage 1 right now (1 step below jb4) with no bolt ons other than an intake.

[j.f.leonard]

?

[hevykevy420]

This tuner works with both PWGs (has the blue harness, see photos) and also EWGs, and it also has the black harness if you want to run E85 tunes. I believe what JB4 did was update harnesses at some point to add the EWG harness, but they left the blue PWG harness on (last pic below) so as to make the tuners more compatible with a larger range of vehicles (that is why the instructions for EWG and PWG are the same, with some skipped steps, see link below). You simply tuck away the unused harnesses (or cut, but I left everything as is, no cuts). I was running this on a very early '12 n20 with the PWG, so I just zip tied the purple/blue EWG harness aside (see pic, and you can verify your EWG harness).

This tuner does not have the OBDII canbus interface cord ($35), you simply use the two red T taps in the engine bay, but you could always purchase the OBDII harness if you do not want to use the T taps (see link below). That canbus plug was a later update/add on at some point, but I have to think not having to run that through the firewall and just using the T taps would be a bit easier, and the t taps leave an impossible to notice pin prick on those wires, if warranty is a concern. But thats entirely up to the next user...

The tuner box serial port connections on this unit were electrical taped so as to avoid water infiltration/corrosion in the engine bay (not exactly a dry place).

https://tougetuning.com/wp-content/u...structions.pdf

https://x-ph.com/f-series-obdii-canb...UaAgdwEALw_wcB

[hevykevy420]

Originally Posted by j.f.leonard

Also, do you need any bolt ons for this?

No mods necessary, from what I understand. I was not running any intake, or exhaust, just the tuner, and it added a noticeable boost in power and response. I had zero issues. Very smooth everything...just don't put crappy gas in, higher octane the better, at least 91 or higher.

This has the stage 1 tune on it already, and from what I recall there are either several others loaded, or which are easy to load via the serial port to USB A cord (its been awhile, sorry, I know for sure the relatively basic 91/93 tune is on there from what I recall).