SKU: 91125092340

JB4 Tuner for Acura

Sale price$243.00 Regular price$270.00
Save 10%

Pay in installments of $67.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

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

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 12 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
C.M.M.
Belleville, US
★★★★★ 5
Absolutely great. I’m a repeat buyer.
Absolutely LOVE this toner. My skin is slightly sensitive and this formula NEVER burns my face. Great exfoliation. No tightness or dry areas. Fantastic for the price and just as good or better than name brand or expensive toners. I’m a repeat buyer. Big bottle and lasts a while. I would highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
R
Verified Purchase
rene watson
Louisville, US
★★★★★ 5
Hard to keep on the shelf
Yesyesyesyes Imo it's the perfect male equivalent of a Honeypot wipe. It's also rock solid for drying out oily skin but to me it's kind of expensive to use it like that. Easily my favorite out of all the Thayers tonics. The serum is also really good for converting red patches into poppable pimples which then just leave, and the sulfur cream is just invaluable as a leave-on make-up/healing combo. Thayers is good stuff man. It's a billion times healthier than benzoyl peroxide or adapalene and even SA is pretty rough on the skin in therapeutic doses. Thayers does such a good job of balancing herbs and gentle chemicals to provide a uniquely safe yet effective remedy, across the board. The only thing that was a genuine flop from them for me was the rosewater tonic, which smelled like God.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
P
Verified Purchase
patty
Battle Creek, US
★★★★★ 5
Results!!
I have been using this product daily for just over two years. It’s one of those things that you just put into your daily routine and sort of forget about it. I usually don’t expect to see a huge improvement with any product. I just use them hoping that I will maintain the status quo and that things won’t get too much worse. :) This past Mother’s Day, I was with my sons and grandkids. I usually avoid letting them take my picture because these darn kids always seem to catch me with an unflattering look on my face. I’m pretty sure they do this on purpose. Anyway, I must not have had my guard up quite enough because when I got home, my phone alerted, and it was pictures, of me, taken incognito. 😎 I cautiously looked, and to my surprise I couldn’t believe how good the skin on my face looked! I hurriedly scrolled back in my pictures on my phone to find a “before” picture from three years ago and I couldn’t believe my eyes. My skin looks so much better now than it did three years ago. I wondered, how could this be? The only change that I made was adding this product to my routine a little over two years ago. There is an actual noticeable difference. Now, I realize that my experience is nowhere near proof beyond all doubt, however, I’m not taking any chances. I will continue to use this product daily. It’s relatively inexpensive and my results have been great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
E
Verified Purchase
Emma S.
Port Orchard, US
★★★★★ 5
Game changer!!
This stuff is amazing! I bought it because there was somewhat of a trend online saying glycolic acid is great for girls with sensitive skin. I’m inclined to agree because I have very dry, sensitive skin and this product works very well on my face and my legs (post shave). This is meant to lightly exfoliate the skin, so if you’ve just shaved your face or skin, a day later, this is great to put on to help prevent any irritation. Also, this is good for dry skin! When I have some dry patches on my face, I buff the dead skin off very gently but thoroughly. Then I use this toner to help prevent it from coming back. I was skeptical this would work because my skin is so extremely dry sometimes, but it really works! It was perfect for doing my makeup with. I use it every once in a while if I need any extra exfoliating. Do bear in mind, though, it smells really bad. I think it’s the witch hazel or something, but the product by itself smells quite gross. Definitely put lotion on a few minutes after it absorbs into the skin. This is a great product and I’m very happy with it. 10/10 when used wisely.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
M
Verified Purchase
Meghan
Los Angeles, US
★★★★★ 5
NOT a "dupe" but has the same results.
I am NOT saying this is a "dupe" or that they are the same in any way because they definitely have different ingredient profiles... so don't come for me... But what I will say is that if you like the first aid beauty radiance pads but don't like the price tag then this may be a cheaper option for you. This is my second bottle of this toner and 3rd tub of pads and for me personally they perform the same. The Thayers is a little stronger of an exfoliant so if you have sensitive or dry skin do a patch test to see how your skin handles it. I use it in the morning after I wash my face. It gives my skin a nice glow, removes dead skin and anything left over after washing my face and just like the radiance pads helps my makeup lay so much better. I have cotton tissues that are smooth on 1 side and textured on the other that I use instead of cotton rounds. I pair it with the Thayers milky toner, maybe some other hydrating toners, a serum, a gel moisturizer and always SPF and even without makeup my skin looks amazing and healthy all day. This is also a 12oz bottle and lasts a long time because you don't need to use a lot for it to do it's job.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 1, 2025

recommand products