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Ignitions and Electrical› Computers, Chips, Modules and Programmers

JB Plus

Engine Tuner for BMW B38 B46 B48 B58

$239.00 $199.00 Save $40.00

SKU: B58_JB_PLUS

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In Stock
Ships by Aug 3
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The JB Plus by JB Powered is a "plug-and-play" engine tuning module designed to enhance performance for BMW and MINI vehicles equipped with B38, B46, B48, and B58 engines. Installation is straightforward, often requiring only a few minutes to connect. This device offers user-adjustable boost control, capable of increasing boost pressure by up to 4.5 psi above the factory setting. This adjustment can lead to substantial performance improvements, with reported gains of up to 40 wheel horsepower and 40 wheel torque on B58 engines. The JB Plus is specifically noted for its compatibility with the 2020-2026 Toyota Supra Mk5 models featuring B48 and B58 engines. It is also mentioned in relation to various BMW models with B38, B46, B48, and B58 engines, indicating a broad application within these engine families.

MIA's Description

The JB Plus is a quick-install tuner designed for specific BMW and MINI engines, including B38, B46, B48, and B58 variants. It allows for user-adjustable boost control, increasing it by up to 4.5 psi over stock.

This tuner provides significant power gains, with up to 40 wheel horsepower and 40 wheel torque reported for the B58 engine.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandJB Plus
Part NumberB58_JB_PLUS
CategoryIgnitions and Electrical

Buy with Confidence

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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