SKU: 66144140863

S58 JB4 Tuner for 2021+ BMW G80 M3 & G82 G83 M4

Sale price$361.35 Regular price$401.50
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

S58 JB4 Tuner for 2021+ BMW G80 M3 & G82 G83 M4Gains are 80whp 100wtq on pump gas and up to 150whp 175tq on higher octane or E85 mixtures. The ultimate tune for your S58 powered G80 M3 and G82 M4, the JB4 allows you to go from factory stock to full race, and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune including user adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol

Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures.

The ultimate tune for your S58 powered G80 M3 and G82 M4, the JB4 allows you to go from factory stock to full race, and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune including user-adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built-in advanced CANbus based diagnostic tools. Installation is easy and completely removable with no splicing or cutting of factory wires. 

For the latest performance results, updates, firmware, and map guide be sure to visit N54tech.com.

Wirelessly connect the S58 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 S58 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.

 



S58 JB4 FEATURES & BENEFITS

• Gains are 80whp/100wtq on pump gas and up to 150whp/175wtq on higher octane or E85 mixtures.
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• 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
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• Made in the USA
• Free USA Shipping
• 5 year warranty

S58 JB4 Applications

BMW M3
• 2021+ S58 G80 BMW M3
• 
2021+ S58 G80 BMW M3 Competition

BMW M4
• 2021+ S58 G82 BMW M4
• 
2021+ S58 G82 BMW M4 Competition

 

What is a JB4?

The JB4 is a plug & 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 be 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.  If your looking for S58 tuning for your 2021+ G80 M3 or G82 M4 the JB4 is a perfect S58 engine tune. 

 

 

DYNO



 

G80 M3 JB4 Dyno, 30% E85 fuel, JB4, BMS S58 Intake


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 66144140863

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It's the largest caddy I could find that is great. Compared with other product reviews: no assembly required, sturdy, scratch protected feet, no rusting, etc. I bought clear and black spray, foam and capped bottles for it and just love having all my natural cleaning products out, handy, coordinating and looking good. Add a splash of color with some nice kitchen sheers or dish cloth. I like that it's not broken into a lot of compartments, but rather mostly platform to mix and match lots of bottles onto. I do have a long handled brush, and the basket holds it beautifully without tipping. I also found a silicone draining mat I like the look of, and it fits Perfectly under the caddy in place of the clear/white tray it comes with. https://www.amazon.com/dp/B0BHQ9MRZQ?psc=1&ref=ppx_yo2ov_dt_b_product_details Since I see this caddy set up every day, I'm happy to have a quality product on display.
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Massapequa, US
★★★★★ 5
Great product.
This stand works perfectly for me! Ive bought a lot and they either rust or the tray leaks water or you have to let the built in metal tray run directly in to the sink, which doesn't work if the sink is raised even a little bit. This stand holds multiple cleaning tools, sponge brushes etc, the drain plugs and I can hang my cleaning cloth to dry. It is perfect. The tray catches all the water drips and cleans easily. It is compact and makes my kitchen counter look neat.
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Reviewed in the United States on February 10, 2025
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Karen
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★★★★★ 5
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It does the job and it keeps it organized by the sink
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Arlene
West Palm Beach, US
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Items holding containers
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Belleville, US
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