RaceChip GTS Black Bluetooth App Tuning Box for BMW Z4 (G29) 2018+ – Plug & Play Piggyback ECU Power Module | Performance Chip/Tuning Box | Remap Alternative | Stage 1 Style Gains | Fits 20i 30i M40i

BMW Z4 G29 Power Upgrade Module with App Control

Transform the way your BMW Z4 G29 drives with this premium plug-in performance module featuring Bluetooth app control. Engineered for 2018 onwards models, this smart piggyback ECU upgrade delivers stronger torque, quicker acceleration and sharper response, all while retaining the factory engine safeguards. It is the perfect remap alternative for drivers who want big gains without permanently flashing the ECU.

We’ve installed and tested this unit on customer cars and our own demonstrators. Feedback has been superb, with owners praising the punchier mid-range, smoother power delivery and easy smartphone adjustability. Installation is fully reversible, takes around 10 to 15 minutes and uses OEM-grade connectors for a clean, secure fit.

Why enthusiasts choose this plug-in tuner for the BMW Z4:

• Up to 30% more performance potential for effortless overtakes and confident driving. Figures are vehicle dependent and indicative.
• Enhanced torque for earlier upshifts and improved drivability across the rev range.
• Potential efficiency improvement of up to 1 litre per 60 miles under comparable driving conditions. Results vary.
• No ECU flash required. Plug-in, drive and revert to stock at any time.
• App connectivity via Bluetooth for on-the-fly adjustment and total control from your phone.
• Built-in protection strategies keep factory safety systems active.

Tailored calibration for your Z4

This unit optimises the engine’s control signals within the available reserves, working with your car’s existing management rather than overwriting it. It fine-tunes the data the ECU sees to unlock additional power and torque while respecting OEM limits. The result is a responsive, flexible BMW roadster that retains stock smoothness and reliability.

Software features

• Motor-specific software: v2.0_GTSBlack
• Seven fine-tuning maps for custom driving preferences
• Engine Protect System+ keeps OEM safety functions in place
• Warm-up timer so added performance only comes in once the engine is at temperature

Hardware highlights

• ARM Cortex-M3 processor for rapid, precise signal processing
• Up to 7 analogue and digital channels for comprehensive control
• Nano-protect coated electronics for durability in the engine bay
• Professional FCI connector and pro fixing system for a secure, tidy fit
• Ultra-resistant composite housing
• Dimensions in mm: 112 L x 111 W x 36 H

Warranty and peace of mind

• 5-year product warranty thanks to premium-grade components and robust construction
• 2-year engine warranty up to £8,000 indemnity
• Coverage applies up to 60,000 miles and vehicle age up to 5 years
• Valid even if the manufacturer warranty has expired

Fitment

Designed for BMW Z4 G29 models from 2018 onwards. Plug-and-play fit with no cutting or splicing required.

Professional installation available

Want it fitted by experts who know BMW tuning inside out? Book installation with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

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Notes: Performance and economy improvements vary by engine variant, vehicle condition, software version and fuel quality. All figures are estimates provided as guidance.