Burger Motorsports JB+ Plug & Play Tuning Box Piggyback Tuner (4-Wire/4-Pin TMAP) for BMW/MINI B38 B46 B48 - Fits M135i xDrive, 228i, M235i xDrive, X1/X2, X3/X4 20i, MINI One, Cooper, Clubman, Countryman

Burger Motorsports JB+ 4-Pin TMAP Plug-In Power Module for BMW and MINI B38 B46 B48

Get a serious step-up in real-world performance with the Burger Motorsports JB+ plug-in module for turbocharged BMW and MINI B-series engines. This 4-wire 4-pin TMAP variant delivers an immediate uplift in boost pressure for faster acceleration, stronger mid-range pull and sharper throttle feel without the cost or commitment of a remap. We run JB+ on our own cars and customer feedback at MJ Modifications has been outstanding for drivability, reliability and value.

Why this upgrade stands out

• Adjustable boost increase up to approximately +4.5 psi over stock for punchy mid-range and top-end power.
• Dyno-verified results - up to 30 wheel horsepower and 40 wheel torque on B48, and up to 35 wheel horsepower and 35 wheel torque on B38.
• Genuine plug-in install - no cutting, no coding, no ECU flash - fits and removes in minutes.
• Factory ECU retains control of timing and fuelling with all OEM protections active.
• Normal driving economy typically unchanged when cruising.
• One module for multiple engines - automatically recognises B38, B46 or B48 on connection.

How it works

The JB+ intercepts the TMAP signal to request a modest, safe boost increase while the factory ECU manages all critical parameters. The result is a smooth, stock-like delivery with a noticeable surge in torque where you use it most. It is the ideal remap alternative for those who want quick gains, easy reversibility and OEM-like behaviour.

Fitment - 4-wire TMAP vehicles only

This version is for cars equipped with the 4-wire 4-pin TMAP sensor. Please confirm your sensor type before purchase. If your vehicle uses a 3-wire sensor, you will need the dedicated 3-wire JB+ for B38 B46 B48 B58.

BMW 1 Series

• 2019+ F40 B48 M135i xDrive
• 2019+ F40 B38 M118i
• 2015+ F20 F21 B38 118i

BMW 2 Series

• 2019+ F44 B46 228i xDrive Gran Coupe
• 2019+ F44 B48 M235i xDrive Gran Coupe

BMW X Models

• 2016+ X1 B46 B48
• 2015+ X1 sDrive18i B38
• 2018+ F39 X2 B46 B48
• 2017+ F39 X2 sDrive18i B38
• 2018+ G01 X3 20i B48
• 2019+ G02 X4 20i B48

MINI

• 2018+ F55 F56 B38 MINI One
• 2014+ F55 F56 B38 MINI Cooper
• 2015+ F54 B38 MINI Clubman
• 2017+ F60 B38 MINI Countryman
• Also suitable for applicable MINI B38 B46 B48 4-wire applications

Real-world benefits

• Noticeably quicker overtakes and stronger pull in-gear.
• Reversible hardware upgrade - remove at any time.
• Perfect for daily-driven cars and long-distance use.
• Works brilliantly with standard hardware - a great first step before intake or exhaust mods.

Installation and fitting

DIY friendly with a simple plug-in harness. Most installs take under a minute once the sensor is accessed. Prefer a professional installation or a health check at the same time? MJ Modifications is based in Warwickshire - request a fitting quote at info@mjmodifications.co.uk.

Part number

MINI-B48-JBP

Notes

• Only for vehicles with 4-wire 4-pin TMAP sensors - please double-check before ordering.
• For cars with a 3-wire sensor, use the specific 3-wire JB+ for B38 B46 B48 B58.
• Not legal for sale or use within California.

Search terms customers use

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