Burger Motorsports JB4 - Tuner for BMW B38 B46 B48

Name: Burger Motorsports JB4 - Tuner for BMW B38 B46 B48
Brand: Burger Motorsports
SKU: 4905037
Price: 529 USD
Availability: InStock

by Burger Motorsports

F22 F23 F30 F31 F32 F33 F36 G01+9 more

$529.00

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Key Features

Piggyback tuner for BMW B38, B46, and B48 engines
Fits F22, F23, F30, F31, F32, F33, F36
Also fits G01, G02, G11, G20, and G22
Good step up from basic boost boxes
Removable without DME flashing or bench unlock
Careful harness routing matters on tighter G-chassis bays

Product Details

Brand: Burger Motorsports
Part #: 4905037
Category: ECU Tuning & Flash

Check if it fits your BMW

Burger Motorsports JB4 - Tuner for BMW B38 B46 B48 — Overview

The JB4 is a piggyback tuner for BMW B38, B46, and B48 turbo cars. It intercepts sensor signals rather than flashing the DME, so it is a good fit if you want adjustability without going straight to a bench unlock or full flash tune. Fitment here covers common BMW applications like F22, F30, F32, G20, G22, G01, and G02, so it lands right in the sweet spot for 2.0T owners looking for a proven setup.

I would pick JB4 over a basic plug-in box if you actually want map control, logging, and room to grow with bolt-ons. It also makes more sense than a full flash for guys who want something removable or are not ready to commit to backend flash tuning yet. Install is straightforward, but on tighter engine bays like G20 and G01 you still want to take your time routing the harness cleanly and keeping connectors fully seated. This is for B38/B46/B48 cars only, so engine code and chassis confirmation matters before you order.