Ignitions and Electrical› Computers, Chips, Modules and Programmers

Burger Motorsports

JB4 Performance Tuner

$659.00

SKU: JB4-W205

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Burger Motorsports JB4 is a plug-and-play performance tuner designed to increase turbocharger output. It connects to four engine plugs and safely boosts turbocharger output by 3-6psi. This results in significant power and torque increases, with gains ranging from 30-60 wheel horsepower depending on the map. The tuner is completely reversible in seconds and is compatible with all-wheel and rear-wheel drive models.
Show original supplier description
The Burger Motorsports JB4 is a plug-and-play performance tuner designed to safely increase turbocharger output for compatible Mercedes-Benz models. It connects to four easily accessible plugs on the engine and safely increases turbocharger boost pressure by 3-6psi, leading to significant power and torque gains. The tuner rescale timing and fueling for the increased boost. Installation is a quick plug-and-play process, and the unit is completely reversible in seconds, meaning no permanent modifications are made to your vehicle. The JB4 tuner features CAN-bus connectivity for advanced tuning capabilities, allowing it to integrate more deeply with your vehicle's systems compared to simpler tuners. It is compatible with both all-wheel drive and rear-wheel drive models. Power gains typically range from 30-60 wheel horsepower on pump gas, with even higher gains possible when using racing fuel or E85 mixtures. The JB4 offers multiple tuning maps for different fuel types, can read and delete fault codes, and displays and logs up to 40 engine parameters. It also features boost-by-gear control for improved traction and can control exhaust flap operation on supported vehicles. This product is not for sale or use in the state of California on any pollution-controlled vehicle. Specific fitment details should always be confirmed with the manufacturer's provided vehicle compatibility lists.
Vehicle Symptoms
  • Lack of power during acceleration
  • Turbo lag or delayed boost
  • Check engine light illuminated
  • Poor fuel economy
  • Sluggish throttle response
Diagnostic Codes
  • P0236 – Turbocharger/Supercharger Boost Sensor A Range/Perf
  • P0101 – Mass or Volume Air Flow Circuit Range/Perf
  • P0300 – Random or multiple cylinder misfire Det
Relevant Conversations
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  • JB4 W205 installation time and tips

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBurger Motorsports
Part NumberJB4-W205
CategoryIgnitions and Electrical
5,000+ Trusted brands
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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