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Ignitions and Electrical› Computers, Chips, Modules and Programmers

MHD

Performance Tuner

$599.00 $379.00 Save $220.00

SKU: N54-JB4

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The MHD N54-JB4 is a BMW performance tuner designed for turbocharged N54 engines. It offers significant power gains, with potential increases of up to 80 wheel horsepower (100 crank horsepower) on stock vehicles, up to 160 wheel horsepower on factory turbos, and up to 350 wheel horsepower on heavily modified cars with larger turbos. The JB4 features a simple plug-and-play installation harness and is compatible with all ECU versions and transmission types for the specified BMW models.

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

BrandMHD
Part NumberN54-JB4
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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