B58 Stage 2 Package

The B58 Stage 2 Tune Package unlocks the true potential of the engine by pairing the bootmod3 ECU remap with a high-flow VRSF or SLN downpipe. This combination increases turbo efficiency, reduces exhaust restriction and delivers strong power gains across the rev range.

Fitment: BMW B58 Models

Key Features

bootmod3 Stage 2 Performance Map

– Increased boost and torque output
– Calibrated for high-flow downpipes
– Flash from home via OBD

VRSF or SLN High-Flow Downpipe

– Decat for maximum performance
– Sports cat option for road-focused builds
– Reduced exhaust back pressure

Improved Turbo Performance

– Faster spool and stronger midrange
– Increased airflow efficiency
– Supports future hardware upgrades

Benefits

– Significant power increase
– More responsive acceleration
– Enhanced exhaust sound

Fitment

– BMW M140i
– BMW M240i
– BMW 340i
– BMW 440i

Installation Notes

– Smartphone or laptop for flashing bootmod3
– OBD ENET cable required
– Ethernet adapter required
– Professional installation recommended for downpipe
– Replace exhaust gaskets if worn

About bootmod3

bootmod3 provides industry-leading BMW ECU tuning with powerful off-the-shelf maps and custom tuning capability.