RaceChip S Plug & Play Tuning Box for BMW 4 Series F32 F33 F36 (2014-) - ECU Piggyback Chip Tuning, Remap Alternative, 5-Map Adjustable Power Module for 420d 430d 435d 420i 428i 430i 435i 440i Coupe & Gran Coupe

Unlock effortless performance for your BMW 4 Series F32 F33 F36 2014 onwards with the RaceChip S plug-in power module. This adjustable ECU piggyback delivers a serious uplift in real-world acceleration and mid-range pull while improving efficiency. It is the smart, remap-alternative for drivers who want extra bhp and torque with quick installation and peace-of-mind protection.

Why owners choose this performance module

• As much as 20 percent increase in output and torque for stronger overtakes and a punchier drive
• Fuel use cut by up to 10 percent for better mpg on daily commutes and motorway runs
• Five user-selectable settings via an easy rotary dial to fine-tune response to your preference
• Install in around 10 minutes with clear instructions and OEM-style connectors
• Engine-specific calibration for the BMW 4 Series platform for smooth, consistent delivery
• Premium German engineering with automotive-grade components for long-term reliability
• Built-in Engine Protect System for safe optimisation within factory parameters

What you will notice on the road

• Stronger mid-range torque for earlier upshifts and relaxed low-rpm cruising
• Smoother throttle response for confident acceleration
• Enhanced drivability in everyday use with the flexibility to dial the level you want

How it works

This plug-in power upgrade uses engine-specific v2.0_S software on an ARM Cortex-M3 platform to precisely optimise key signals before they reach the factory management. The advanced mini-computer and Engine Protect System work together to maintain safety while unlocking extra performance. Electronics feature nano-protect coating and professional automotive safety connectors for robust operation in the engine bay.

We have fitted and used this on customer cars, and feedback has been consistently positive. Drivers love the noticeable torque boost, the adjustability, and the simple install that keeps everything neat with a tidy, ultra-resistant housing.

In the box

• RaceChip S control unit
• Vehicle-specific wiring harness
• 4 cable ties
• Installation guide

Technical details

• Software: engine-specific v2.0_S with 5 adjustable maps
• Processor: ARM Cortex-M3
• Channels: up to 3 analogue and digital
• Connector: professional automotive safety connector FCI
• Electronics: nano-protect coated
• Housing: ultra-resistant plastic with basic fastening system
• Dimensions: 87 mm L x 95 mm D x 36 mm H

Professional fitting

Prefer us to install it for you. Book a fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search-friendly fitment and benefit terms

BMW 4 Series performance upgrade, F32 F33 F36 power increase, ECU piggyback, plug-in chip tune, remap alternative, torque booster, bhp enhancer, adjustable map selector, improved mpg, economy tune for daily driving, German engineered power module, safe tuning for BMW coupe and Gran Coupe 2014 onward.

Order with confidence for a noticeable step-up in power, torque and efficiency with a quick, clean install and proven German hardware tailored to your BMW.