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JB4 Tuner for N20/N26 BMW
- Price
- $582.99
Vehicle Type: Electronic wastegate (Most 2014+ Models) w/OBDII
Optional Device Connection: None
📞 Questions before ordering? Call us at
475-227-5381
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 driver's 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. Also, note some F10 and X chassis models require a JB4 mobile adapter or BMS data cable to select options bit#1 to enable the in-dash controls for those models.
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. A separate JB4 Mobile app purchase is 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.
Vehicle Fitment
2 Series
• 2014-2016 BMW 2 Series F22 F23 220i 228i N20 & N26 2.0L TURBO 4 CYL - all vehicles select (EWG) Electronic Wastegate version
3 Series
• 2012-2016 BMW 3 Series F30 F31 320i 328i N20 & N26 2.0L TURBO 4 CYL
4 Series
• 2014-2016 BMW 4 Series F32 F33 420i 428i N20 & N26 2.0L TURBO 4 CYL - all vehicles select (EWG) Electronic Wastegate version
5 Series
• 2011-2016 BMW 5 Series F10 520i 528i N20 & N26 2.0L TURBO 4 CYL
X Series
• 2011–2017 F25 BMW X3 xDrive20i, xDrive28i 2.0L TURBO 4 CYL
E chassis X1 and Z4
• 2013-2016 E89 BMW Z4 28i 2.0L TURBO 4 CYL - select E Series X1 & Z4 in dropdown
• 2013-2015 E83 BMW X1 28i including xDrive 2.0L TURBO 4 CYL - select E Series X1 & Z4 in dropdown
Questions?
WE HAVE ANSWERS
How long til' I get my order?
Small items arrive to you in under 1 week
Larger products like full suspension kits must ship freight and can take 1-3 Weeks
Are Installation Instructions Included?
Instructions are included for most parts that require any sort of knowledge to install.
Here's what to do if your parts come WITHOUT instructions:
1. Some parts are genuinely common sense on how they get installed
2. If you can't figure it out on your own, YOUTUBE IS YOUR FRIEND! Our founder started this company from learning how to build headlights off a YouTube Video
3. If there are no videos on YouTube, or instructions anywhere on Google then please CALL OR EMAIL US and we will guide you through or get you instructions from the manufacturer
4. Doing installs on your own is always fun, but sometimes, it isn't. Always consider having your parts professionally installed
ALWAYS CONSIDER US. We sold you the parts, let us install them at THE LAB in Connecticut. We offer enclosed and open cross country transportation.
Of course you won't want to spend thousands on transportation to install lug nuts or emblems but if you are spending a LOT of money on parts, you may just want to send the car our way
What is your return policy if the part doesn’t fit or isn’t what I expected?
If the part was NOT installed, we accept returns within 14 days of delivery.
If the part WAS installed (or attempted installation), we cannot accept a return.
Do your parts come with a warranty?
All parts come with Manufacturer Warranty! Each manufacturer has different warranties so we suggest reading up on their warranty policy before ordering.
I found a better price somewhere else, can you beat it?
YES! If you come across a competitor with a lower advertised price than us, we will BEAT it by at LEAST 1%. Please contact us with proof of the lower priced product.
Do you give out discounts or sponsorships?
NO! We do not give out discounts or do sponsorships. You can get 5% OFF your first order by signing up for text & email notifications. OR just wait until our BLACK FRIDAY Sale that happens once a year.
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Store Information
Customer Support : 9:00 AM To 5:00 Pm (Mon To Fri)
Address: 150 Universal Dr , North Haven , CT 06473
*Location Not Open to the Public*
Email: sales@legendsautoparts.com
Phone: (475) 227-5381
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