SKU: 91125092340

JB4 Tuner for Acura

Sale price$243.00 Regular price$270.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

JB4 Tuner for AcuraGain up to 80whp 100wtq on 3. 0L and 50whp 60wtq on 2. 0L Turbo Acura Engines The JB4 Acura tuner is a powerful plug & play performance tuning system designed for modern turbocharged Acura engines including the Integra Type S, TLX Type S, TLX 2. 0T, MDX Type S, and RDX 2. 0T. The JB4 connects to two easy to access sensors in the engine bay and works with your factory ECU to safely remap boost, timing, and fueling for significant horsepower gains and

Gain up to 80whp / 100wtq on 3.0L and 50whp / 60wtq on 2.0L Turbo Acura Engines

The JB4 Acura tuner is a powerful plug & play performance tuning system designed for modern turbocharged Acura engines including the Integra Type S, TLX Type S, TLX 2.0T, MDX Type S, and RDX 2.0T. The JB4 connects to two easy-to-access sensors in the engine bay and works with your factory ECU to safely remap boost, timing, and fueling for significant horsepower gains and reduced turbo lag.

No ECU flash required and fully compatible with locked 🔒 ECUs.

Installation is extremely discrete and unlike traditional ECU flash tuning the JB4 can be removed quickly without leaving a trace. Your vehicle’s factory ECU never detects the additional boost or power levels. Fuel economy during normal driving remains unchanged and the JB4 is compatible with all factory driving modes.

The JB4 includes a plug & play OBDII CANbus connection allowing it to read critical engine data directly from the ECU in real time including pedal position, throttle position, ignition timing, fuel trims, air/fuel ratio, engine knock, and more. Other tuners without CANbus integration cannot monitor or adjust tuning based on this critical engine data.

Using this advanced data input the JB4 Acura performance tuner delivers huge power gains with smooth and reliable power delivery.

The JB4 also includes multiple performance maps, smoother partial throttle tuning, additional engine safety systems such as lean protection and overboost protection, advanced logging capability, boost by gear control for improved traction, the ability to read and delete fault codes, and ongoing improvements through free firmware updates.

Wirelessly Connect to your JB4

Add the optional JB4 PRO Bluetooth adapter to connect the JB4 tuner to your iOS or Android smartphone. The JB4PRO mobile app allows you to monitor engine data, change performance maps, record data logs, and update firmware as new features and more powerful maps are released.

The JB4PRO app provides a clean user interface with built-in help menus and advanced data logging tools that can estimate performance and help identify tuning issues.

For more information about the JB4PRO smartphone tuning app click here.

JB4 Features & Benefits

  • Power gains up to 80whp / 100wtq on Acura 3.0T engines
  • Up to 50whp / 60wtq gains on Acura 2.0T engines
  • Improves 0-60 times and quarter mile performance
  • Preloaded with custom JB4 Acura tuning software and multiple maps
  • Ethanol (E85) compatible performance maps
  • Read and delete fault codes directly from the app
  • View and record up to 40 engine parameters in real time
  • Boost-by-gear control for improved traction
  • Free JB4PRO smartphone app for tuning and data logging
  • CANbus OBDII integration for advanced tuning features
  • Smooth OEM-like drivability and power delivery
  • Compatible with all factory driving modes
  • Fuel economy unchanged during normal driving
  • 91 octane fuel or better recommended for performance maps
  • Not VIN locked and can be removed and resold
  • Includes rugged JB4 billet aluminum enclosure
  • Made in the USA
  • 5 year warranty

Vehicle Fitment

Acura

  • 2024+ Acura Integra Type S 2.0L Turbo
  • 2023+ Acura Integra A-Spec 1.5L Turbo
  • 2021+ Acura TLX Type S 3.0L Turbo
  • 2021+ Acura MDX Type S 3.0L Turbo
  • 2021+ Acura TLX 2.0L Turbo
  • 2019+ Acura RDX 2.0L Turbo

What is a JB4?

The JB4 is a plug & play performance tuner for turbocharged vehicles. The JB4 connects between engine sensors and the vehicle’s ECU allowing it to safely manipulate boost, fuel delivery, and ignition timing for significant power gains.

Unlike basic tuning devices, the JB4 integrates with CANbus, supports advanced engine safety monitoring, smartphone connectivity, ethanol tuning, and continuous firmware updates that add features and performance improvements over time.

The JB4 system is not VIN locked and can be removed and transferred to another vehicle or resold later. The JB4 has been the industry leader in plug & play turbocharged tuning for more than a decade and is used by enthusiasts in over 67 countries worldwide.

Is the JB4 a real tune?

Yes. The JB4 actively adjusts boost, ignition timing, air fuel ratios, and fuel trims using real-time engine data through its CANbus connection. This allows the JB4 to deliver performance gains similar to ECU flash tuning while maintaining factory safety systems and without permanently modifying the ECU.

Acura 1.5L and 2.0L Install Guide

Acura 3.0L Install Guide

2021 Acura TLX Type S – ~93 octane – JB4 Map2 Dyno Results

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: 91125092340

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Kindle Customer
Chelsea, US
★★★★★ 4
keyboard and case is phenomenal, trackpad is borderline unfunctional
Color: Black
I bought this case, because of the keyboard and trackpad, i wanted to use my ipad more like a laptop. the keyboard is phenomenal and certaintly better than other cheap ipad keyboards i have tried, I can actually use this one without having to repeatedly slam or hard press certain keys and can actually have a flow of typing. additionally, everything else regarding the case itself is amazing. it isnt cumbersome or bulky and it is very easy to swap between ipad and laptop mode on the fly. the trackpad however is genuinely unusable. the sensitivity on the trackpad is horrid and I cannot figure out how to change it, and additionally, clicking using the trackpad is outright impossible. you try to left click, it registers as a right click, or you try to click and it instead snaps your cursor to the bottom of the screen instead. it is also impossible to use any gesture functions with the trackpad, even something as simple as scrolling up and down or left to right is impossible. it is outright impossible to have any kind of workflow using the trackpad. it is unfortunately just a lot easier to use the keyboard and touch screen! its a shame that the keyboard and case itself is very nice too, so I will now have to spend more money on a separate mouse, which is additionally ANOTHER item i will have to carry around, just to make what I already bought work the way I expected.
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Reviewed in the United States on June 4, 2026
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Jessie A.
Whiting, US
★★★★★ 5
Great quality at a great price range!
Color: Navy Blue
Works very well for the day to day. Great quality at a great price range. Would definitely buy again if needed.
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Reviewed in the United States on May 14, 2026
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Allana W
Cuba, US
★★★★★ 5
Solid case.
Color: Sky-Blue
Love this case. Fits great and the color is great! The keyboard is nice and it even has a little spot for a stylist.
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Reviewed in the United States on June 3, 2026
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Nosiest
Louisville, US
★★★★★ 4
Cheap and good
Color: Black, Color: Black
I chose the color black and it gives a really nice look, especially with the multicolor led lights around the keys. It is very easy to clean and you can shut off the keyboard to prevent any mess with the iPad. The magnet is very nice and keeps the keyboard in place. The keyboard doesn’t easily slip or anything so it holds the iPad very well. Only bad thing is that over time the iPad begins to scrape off the pain and it leaves your keyboard with some white spots all over :/ but if looks isn’t something that you care about, this is the keyboard for you. Don’t use it for gaming because there is a delay in functionality when you press a key and then try to use the pad. Also, you have to press the keys a bit harder than the usual keyboard. But for the price? This is a great item! Definitely worth my money
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Reviewed in the United States on January 18, 2026
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Stephanie Mueller
Bozeman, US
★★★★★ 5
Thumbs up on ipad
Color: blue
Nice covers, secured my iPad.
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Reviewed in the United States on May 26, 2026

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