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JB4 Tuner for N54 BMW - Legends Auto Parts
JB4 Tuner for N54 BMW - Legends Auto Parts
JB4 Tuner for N54 BMW - Legends Auto Parts
JB4 Tuner for N54 BMW - Legends Auto Parts
JB4 Tuner for N54 BMW - Legends Auto Parts
JB4 Tuner for N54 BMW - Legends Auto Parts
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JB4 Tuner for N54 BMW

Price
$527.99

|OR|
Optional Device Connection: None

JB4 Tuner for N54 BMW

Optional Device Connection
Price
None
$527.99
JB4 Wireless Mobile Smart Phone Kit (Wireless Connection) [+$149.00]
$692.99
BMS Data Cable (Wired Connection) [+$40.00]
$573.09
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📞 Questions before ordering? Call us at 475-227-5381

N54 JB4 BMW Performance Tuner

How about up to 80hp to the wheels (100hp crank) on a completely stock car, up to 160hp to the wheels on factory turbos, or up to 350hp to the wheels on a fully modified car with larger turbo(s)? The JB4 includes a simple plug and play installation harness and is compatible with all ECU versions and transmission types. It's everything you need to take your N54 powered vehicle from mild to wild.

In addition to several performance maps which can be selected "on the fly" right from the driver's seat the JB4 includes a 100% stock bypass map, a valet mode, ethanol fuel (E85) support, progressive water/methanol injection support, racing fuel map, an auto-tuning map that adjusts the JB4 mapping to your current climate, octane, vehicle condition, and modifications continuously, and for those interested in an rpm by rpm user adjustable map. Other features include optional in-dash gauges for boost and other engine parameters, a programmable shift light, on the fly adjustable torque limiting to aid with launches at the track, an optional 2STEP rev limiter & no lift shifting for manual transmission cars, an optional speed delimiter, and much more.

Remember 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. As you decide to modify your car further the JB4 is set up to grow with your vehicle. Whether you're racing a 100% OEM car on pump gas or a 700whp single turbo drag queen, the JB4 has the perfect mix of performance, features, flexibility, and support to ensure your car performs to the best of its potential! Made in the USA. 5-Year Warranty.

 

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.

Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.

Vehicle Fitment

BMW 1 Series

  • 2008-2010 E82 BMW 135i Coupe
  • 2008-2010 E88 BMW 135i Convertible
  • 2011 E82 BMW 1M


BMW 3 Series

  • 2006-2010 E90 BMW 335i Sedan including xDrive
  • 2006-2010 E91 BMW 335i Touring including xDrive
  • 2006-2010 E92 BMW 335i Coupe including xDrive
  • 2007-2010 E93 BMW 335i Convertible
  • 2011-2013 E92 BMW 335is


BMW 5 Series

  • 2008-2010 E60 BMW 535i Sedan including xDrive
  • 2008-2010 E61 BMW 535i Touring including xDrive


BMW X Series

  • 2008-2010 E71 BMW X6 xDrive35i


BMW Z Series

  • 2009-2016 E89 BMW Z4 sDrive35i and Z4 sDrive35is
JB4 Tuner for N54 BMW - Legends Auto Parts

JB4 Tuner for N54 BMW

None

$527.99
None

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.

See It IRL

REAL CUSTOMERS, REAL BUILDS

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