SKU: 23546000232

JB4 Performance Tuner for Mercedes-Benz C63, E63, GTS, GLC, Including S models

Sale price$502.61 Regular price$558.46
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

JB4 Performance Tuner for Mercedes-Benz C63, E63, GTS, GLC, Including S modelsPower gains of up to +100whp and +100wtq to your AMG The JB4 is simply the most powerful and feature rich tuning system available for your AMG. Using the same technology as our advanced tuning systems for the BMW M3 and M5 models, our new AMG C63 system delivers factory smooth performance increases in a package that can be installed or removed in under an hour. The JB4 includes many features not found on other competitive AMG tuning products

Power gains of up to +100whp and +100wtq to your AMG

The JB4 is simply the most powerful and feature-rich tuning system available for your AMG. Using the same technology as our advanced tuning systems for the BMW M3 and M5 models, our new AMG C63 system delivers factory smooth performance increases in a package that can be installed or removed in under an hour. The JB4 includes many features not found on other competitive AMG tuning products including:

Fuel control to ensure safe operation at higher power levels. CANbus allowing the JB4 to monitor and integrated advanced engine data for unparalleled perforation and safety. Performance maps for pump fuels, E85 mixtures, race fuels, WMI, and even a lower than stock performance VALET map, all selectable on the fly via the optional JB4 mobile phone app. With JB4 Mobile you can also datalog to your phone, enter setting or custom map changes, update the firmware to unlock new features and maps as we add them, read or delete fault codes, measure your 0-60 time, and much more.

In addition, the JB4 includes many useful racing features not found on any other system including user-adjustable boost by gear to improve traction off the line.

The JB4 is compatible with both C63 and C63S models and is not VIN locked so it can be moved to your next vehicle or resold, and is made in the USA.

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. Separate JB4 Mobile app purchase also required.

Optional BCM (Boost Control Module)

The JB4 attaches to the manifold TMAP, chargepipe MAP, and fuel pressure connections on each side of the engine, for six total connection points plus OBDII for CANbus. These fundamental attachments provide the JB4 with a wide range of tuning adjustments. For vehicles targeting very high boost levels using heavy bolt modifications, WMI, larger turbos, and/or very high octane, additional wastegate dutycycle may be beneficial in driving boost up to the higher target. To increase wastegate dutycycle the BCM add on harness is required. Although not currently available it will be $199 and plugs into the JB4 harness and the boost control solenoid under the vehicle for direct wastegate control.

For a full map listing, firmware details, and more, join the discussion here: https://www.n54tech.com/forums/showthread.php?t=55094

 

JB4 FEATURES AND BENEFITS

• Power gains of up to 100hp and 100tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 Mercedes 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
• Exhaust flap operation can be controlled in most JB4 applications
• 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 warrantyar warranty

  

APPLICATIONS

C-Class
• 2015+ C63/C63s AMG

E-Class
• 2017+ E63/E63s AMG

GT S
• 2016+ AMG GTS

GLC
• 2015+ GLC 63/63s AMG

AMG GT
• 2018+ AMG GT 63/63S

 

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.


What is a JB4 for the Mercedes Benz C63 AMG Video



Mercedes Benz C63 AMG JB4 Reaction Video

Mercedes Benz C63 AMG JB4 Install Video

Mercedes C63 JB4 OBDII / APP Install

DYNO RESULTS

2018 AMG C63 with BMS Intake, 30% E85

 

2018 AMG C63, 30% E85

 

2018 C63, JB4, BMS Intake, BCM, Race Gas Mix

Mercedes Benz C63 AMG JB4 Mobile App Demo Video

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: 23546000232

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4.4 ★★★★★
Based on 21 reviews
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T money
Whiting, US
★★★★★ 4
Good
Size: 1-Gallon
I’ve used this sprayer for applying fertilizer, insect control, and watering plants, and overall it works really well for basic lawn and garden jobs. The pump builds pressure quickly, and the adjustable nozzle gives a nice range from mist to stream. I also like the translucent tank because it makes it easy to see fluid levels while mixing. The anti-clog filter is a nice feature and helped keep the spray consistent during use. It’s lightweight and comfortable to carry around the yard. The only reason I’m giving 4 stars instead of 5 is that some of the plastic parts feel a little lightweight, and I noticed a slight drip from the nozzle after extended use. Still, for the price and performance, it’s a solid sprayer and gets the job done well.
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Reviewed in the United States on May 10, 2026
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Verified Purchase
Jose
Whiting, US
★★★★★ 5
Impressed so far
Style: Standard Grip, Size: 25ft, Color: Chartreuse
I have a large back yard, a pool and a stationary hose reel bolted to the house that holds around 250 feet of hose (depending on the hose). During the summer especially, we use this hose a lot. The reel had 200 feet of pretty good quality, heavy duty residential hose on it. That hose lasted over 20 years but was starting to show it's age and had been repaired several times. What's more, my wife hated the stuff. Her primary complaint was how heavy it was. She really struggled to drag it around the yard or wind it back on the reel. So it was time to replace it. My criteria: brass fittings, reasonably heavy duty and durable, decent price. Her criteria, lighter! So I searched the reviews and looked at damn near everything amazon sells and picked this stuff. I ended up buying two 50 foot hoses and one 100 foot hose. So, here's what I think. The hose ends are heavy duty brass and well crimped. The little bits of plastic sleeve on each end are just branding and don't provide any other useful purpose. This isn't a criticism, just an observation. I cut them off. As others have mentioned, the female fittings are crimped a little tight. This makes it somewhat difficult to tighten them without twisting the hose. I put a little white lithium grease on mine and held the things in my hand - twisting back and forth until they lubed up and loosened up. No harm, no foul, I'd rather a little tight than loose. Once that was done, I connected all the sections and stretched the whole thing out in the yard. I connected one end to the faucet (hose reel), slapped a nozzle on the other end and turned on the water. It was a warm summer day, I let the hose fill with water and then went down the entire 200 foot length untwisting and straightening it all out. Then I left it bake in the sun for a couple hours under pressure. After that I turned off the water, and started inspecting the hose. I have about 80lbs of water pressure, left under pressure and cooking in the sun, the hose definitely swelled a little diameter wise, but no bulges or anything untoward. Connections all looked good, no leaks or malfunctions. So, I turned off the water and took off the nozzle and started winding it up on the reel. Now right away I could tell that this stuff was more pliable and significantly lighter then the hose it replaced. I carefully spooled it up on the reel and threaded a brass shutoff and brass quick connector on the end. That was the middle of June, 2023. It's now December 2023. The verdict. I like the stuff, and more importantly, so does my wife. From my perspective, I like the color, it's easy to see and find in the grass, I don't trip over it or worry about not seeing it before I run over it while cutting the grass (you can laugh, but that accounted for one of the previous "repairs" I mentioned earlier). Now, when you pull hose off a reel, it tends to come off pretty straight, which automatically alleviates a bunch of twisting and kinking issues. Still, as you drag this stuff around the yard it keeps its shape pretty well and doesn't twist up or kink. It's flexible and yet "stiff" enough to drag around corners without issue. The hose itself has definitely faded a little colorwise, the end that gets the most use is less orange then the hose that spends most of its time wrapped on the reel, but not unduly so. After a summer of use, I'd have to say it's held up well, without any signs of terminal wear and tear. What does my wife think? She loves the stuff. It's much easier for her to use and wind back up. She really is the primary user, she does 90% of the pool "stuff", plant tending, gardening and watering. If she likes it, I'm good. So, we'll see, in a couple more years, if this hose doesn't hold up, I'll come back and let you know. For now I'd have to say, if you need a new hose, try this stuff.
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Reviewed in the United States on October 12, 2024
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Verified Purchase
Chelle
Natrona Heights, US
★★★★★ 5
Great hose!
Style: Standard Grip, Size: 100ft, Color: Chartreuse
5 stars without hesitation. This Flexzilla Garden Hose 5/8 in. x 100 ft. is legitimately one of the best hoses I’ve used. It’s actually flexible like advertised, doesn’t fight you every time you move it around, and it feels way more durable than the cheap stiff hoses from big box stores. I honestly don’t understand a lot of the complaints, mine has held up great, doesn’t kink nearly as bad as others I’ve owned, and is super easy to coil up. Solid hose.
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Reviewed in the United States on May 10, 2026
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Verified Purchase
james e. warner
West Palm Beach, US
★★★★★ 5
If you want to buy your last hose then flexzilla is your hose.
Style: Standard Grip, Size: 50ft, Color: Chartreuse
O.K. if you are reading my review I can honestly say that I don't think anyone knows what they are buying with this hose like I do as Amazon has the record of when I bought 100 feet of this hose. Long Long Long term user=purchased in 2017. I used this hose today and it looks-feels-works like it did the day I hooked it up on my reel. So flexible you can use it for a tourniquet if required. Hot-cold it don't matter this hose is the best. I am 70 yrs. old and it is the best hose I ever used in my life. Buy this hose once and then be done. Never kinks and not to heavy when moving around. Buy some and get on with whatever work you need to wash and then roll it up and forget about it.
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Reviewed in the United States on May 22, 2026
T
Verified Purchase
Twylla J. Cameron
New York, US
★★★★★ 4
Hose kinks.
Style: Standard Grip, Size: 100ft, Color: Chartreuse
I bought this hose 2 months ago and really like how light it is and easy to pull around the yard. However, I am having a problem with it kinking all of the time. It is really frustrating to have to go back and straighten it out when I am watering.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026

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