bootmod3 S55 Flash Tune – BMW M2/M3/M4

Unlock the full potential of your S55-powered BMW M2, M3 or M4 with the bootmod3 S55 Flash Tune. This tune delivers huge gains in power and torque, sharper throttle response, faster spool, enhanced drivability and full customisation over the vehicle’s factory calibration. Designed for both stock and modified S55 setups, bootmod3 is one of the most popular and trusted tuning platforms worldwide.

Key Features

Massive Power Gains

– Increased horsepower and torque across the entire rev range
– Strong mid-range punch and improved top-end pull

Multiple OTS Maps Included

– Stage 1 for stock vehicles
– Stage 2 for upgraded downpipes
– Various fuel options including 95/98RON, E30 and race blends

Custom Tuning Compatible

– Supports custom maps from professional tuners
– Ideal for hybrid turbos and high-power builds

Advanced Engine Control

– Adjustable burble settings
– On-the-fly map switching
– Cold start on/off
– Boost by gear (where supported)
– Exhaust valve control
– Live datalogging and diagnostics

Easy Installation

– Flash directly through your phone or laptop
– No removal of the ECU required
– Revert back to stock anytime

Benefits

bootmod3 transforms the S55 engine, giving it harder acceleration, better torque delivery and more responsive throttle behaviour. Whether you're fast-road driving or building a high-power track setup, the tune delivers flexibility, reliability and exceptional performance.

Fitment

– BMW M2 Competition (F87) – S55 engine
– BMW M3 (F80)
– BMW M4 (F82/F83)

Requirements

– OBD ENET cable or bootmod3 wireless device
– Stable internet connection for activation and flashing

Notes

– Not compatible with non-S55 engines
– Off-road use only where required by local laws
– Recommended to use high-quality fuel for best performance

About bootmod3

bootmod3 is one of the most advanced cloud-based tuning platforms available for modern BMW engines. Known for reliability, customisation and ease of use, it is trusted worldwide by thousands of enthusiasts and professional tuning shops.