RaceChip GTS Black Bluetooth App Tuning Box for BMW 4 Series F32 F33 F36 (2014-on) - Plug & Play Piggyback ECU | Remap Alternative Performance Chip/Power Module | Coupe, Convertible & Gran Coupe

BMW 4 Series F32 F33 F36 plug-in ECU upgrade with smartphone control

Unlock effortless performance and sharper throttle response on your BMW 4 Series with a premium plug-in power module that connects via Bluetooth to your phone. It is a fast, reversible alternative to a remap that delivers serious gains in bhp and torque while keeping factory safety systems intact. No ECU flashing, no coding, just a high-quality piggyback ECU that adds punch, flexibility and everyday drivability.

This is the GTS Black with App control variant, engineered for strong, reliable gains and fine control from the driver’s seat. We rate it highly and our customers love the stronger mid-range shove, smoother acceleration and the ability to switch settings on the fly.

Key benefits

• Up to 30% more power and torque within safe reserves for a quicker, more responsive drive
• Bluetooth app control to select maps, adjust settings and deactivate when needed
• Seven fine-tuning calibrations so you can tailor delivery for road or motorway use
• Warm-up protection that brings in added performance only once the engine is at temperature
• Enhanced engine protection system designed to work with OEM safeguards
• Quick plug-in fitting in around 10 to 15 minutes with no permanent changes
• Potential fuel savings of up to 1 litre per 60 miles depending on driving style and conditions

Built for longevity

• 5-year product warranty
• 2-year engine warranty up to £8,000 cover
• Warranty terms: up to 60,000 miles and 5 years of vehicle age, valid even after the manufacturer’s warranty has expired

Vehicle compatibility

BMW 4 Series 2014-on: F32 Coupé, F33 Convertible and F36 Gran Coupé.

Software features

• Motor-specific software: v2.0_GTSBlack
• 7 fine tuning mappings
• Engine Protect System +
• Warm-up timer

Hardware specification

• ARM Cortex-M3 processor
• Up to 7 analogue and digital channels
• Nano-coated electronics for moisture resistance
• Pro-grade FCI connector for secure, reliable connections
• Ultra-resistant composite housing with pro fixing system
• Dimensions: 112 x 111 x 36 mm

Why choose a plug-in power box over a remap

This piggyback ECU is a simple, reversible tuning solution that can be removed at any time. It is a remap alternative that increases torque for stronger overtakes, quicker in-gear acceleration and improved drivability without opening the ECU. Ideal for daily use and long-distance cruising.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and advice.

What our customers say

We have fitted this unit on multiple BMW 4 Series models and feedback has been consistently positive. Drivers report noticeably stronger mid-range torque, smoother delivery and the convenience of app control to suit every journey.

Search-friendly terms

BMW 4 Series tuning module, piggyback ECU upgrade, plug-in power box, remap alternative, chip tuning unit, Bluetooth tuning app, performance upgrade F32 F33 F36, torque increase, bhp gains, improved acceleration, safe reversible tuning, UK performance parts supplier.

Note: Performance and economy improvements vary by vehicle condition and driving style. Figures are guidance based on RaceChip’s research.