SKU: 41928043847

Alfa Romeo 2.0L JB4 Tuner

$320.85 $356.50
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Description

Alfa Romeo 2.0L JB4 TunerPower gains of up to 40hp to the wheels on a stock vehicle The JB4 is the most advanced and highly featured tuning system available for your 2017+ Alfa Romeo Giulia or Stelvio 2. 0L 4 cylinder turbo. Power gains are up to 40hp to the wheels (55hp crank) on a completely stock car on pump gas, gains with bolt on parts, higher octane, and larger turbos are even higher. The JB4 features a simple plug & play harness for easy installation & removal and

Power gains of up to 40hp to the wheels on a stock vehicle

The JB4 is the most advanced and highly featured tuning system available for your 2017+ Alfa Romeo Giulia or Stelvio 2.0L 4-cylinder turbo. Power gains are up to 40hp to the wheels (55hp crank) on a completely stock car on pump gas, gains with bolt-on parts, higher octane, and larger turbos are even higher.

The JB4 features a simple plug & play harness for easy installation & removal and includes many features not found with any other tune. Including on the fly map switching from your phone/tablet instead between factory and various performance maps, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, and much more. 
 
The JB4 also does not require any user setup or customization but for those who are interested in logging, adding new features as we post them, etc., we suggest the BMS DATA cable or REV3 mobile phone adapter. 

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.

JB4 Features & Benefits

• Power gains of up to 40hp to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 Alfa Romeo 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 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

 

Vehicle Fitment

• 2017+ Alfa Romeo Giulia 2.0L 4 cylinder Turbo
• 2017+ Alfa Romeo Stelvio 2.0L 4 cylinder Turbo

More Info

For the install guide, map guide, and the latest firmware, click here.


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 the 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.



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: 41928043847

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4.1 ★★★★★
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A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Dogs love them
3 dogs all fight over these bones
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2023
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Verified Purchase
Shelli Williamson
San Leandro, US
★★★★★ 2
After 2 weeks update 9 month review
Updated. 9 months of aggressive chewing. Pic 2 - Purchased this 2 weeks ago. I have two Pitties. An 8 yr old 80lbs and a 2 yr old 45 lbs. Little pieces flake off as they chew. It is hard finding tough toys for very aggressive chewers. I’m not impressed by these. However, the dogs do love them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 29, 2023
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Verified Purchase
artistgirl
Boise, US
★★★★★ 5
Dog love them
Great dog are kept busy
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Reviewed in the United States on June 18, 2023
T
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Timothy G
Grantham, US
★★★★★ 5
Chew incessant dogs
Color: 1PC-Beef-Red
Very tough, My Dashound is a Tasmanian Devil & young this has really slowed his roll, and still enjoying the chewing & licking with peanut butter. Great item!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
M
Verified Purchase
Matthew Nichter
Port Orchard, US
★★★★★ 5
Durable!
Color: 1PC-Beef-Red
Alright, here's a product review for those Tough Dog Toys: Finally, a Toy That Survives My Monster! - Tough Dog Toys Review As the owner of a determined (and I mean determined) large breed chewer, finding toys that last longer than five minutes has been a constant and often frustrating quest. I've gone through countless plush toys ripped to shreds, rubber toys with chunks missing, and even some "indestructible" toys that met their demise far too quickly. That's why I was both hopeful and skeptical when I came across the Tough Dog Toys, designed specifically for aggressive chewers and large breeds. Let me tell you, these bone-shaped nylon toys are living up to their name. My power-chewing Labrador has been going at this thing for days now, and I'm genuinely impressed. Where other toys have succumbed to his relentless gnawing, the Tough Dog Toy has held its own. There are some minor teeth marks, as expected, but absolutely no significant damage, no pieces torn off, and no signs of imminent destruction. "Almost indestructible" might actually be an understatement! The design is simple but effective. The solid nylon construction feels incredibly durable, and the bone shape is easy for my dog to grip and maneuver. It's also a good size for a large breed – substantial enough that he can really get a good chew going without it disappearing in his mouth. What I appreciate most is the peace of mind this toy provides. I no longer have to constantly supervise playtime, fearing that he'll ingest pieces of a destroyed toy. This feels like a safe and long-lasting option for even the most enthusiastic chewers. Pros: * Truly durable – stands up to aggressive chewing from a large breed. * Solid nylon construction feels virtually indestructible. * Safe design with no small parts to break off. * Good size and shape for large dogs to grip and enjoy. * Provides long-lasting entertainment. Cons: * May show some teeth marks over time (though this hasn't compromised its integrity). * It's a fairly hard material, so dogs who prefer softer toys might not be as interested. Overall: If you're at your wit's end trying to find a toy that can withstand your aggressive chewing large breed dog, I highly recommend giving the Tough Dog Toys a try. This bone toy has proven to be the most durable option we've encountered, offering excellent value for money and, most importantly, a safe and engaging chewing experience for your furry friend. Five out of five paws!
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Reviewed in the United States on April 23, 2025

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