The N55 Stage 2 Tune Package is designed to deliver significant power and torque gains by combining the bootmod3 ECU calibration with a high-flow VRSF decat or sports cat. By reducing exhaust back pressure and optimising boost and ignition mapping, this package transforms the performance of the N55 platform.

Fitment: BMW N55 Models

Key Features

bootmod3 Stage 2 ECU Calibration

– Substantial power and torque increase
– Optimised for high-flow downpipe setups
– Flash at home via OBD

High-Flow Performance Downpipe

– Choice of VRSF downpipe
– Decat for maximum performance or sports cat for road use
– Reduced turbo back pressure

Increased Turbo Efficiency

– Faster spool and improved midrange
– Enhanced exhaust flow
– Supports further performance modifications

Benefits

– Major performance gains over Stage 1
– Sharper throttle response and faster boost
– More aggressive exhaust tone

Fitment

– BMW M135i / M235i
– BMW 335i / 435i
– BMW M2 (N55)

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 is one of the world’s leading BMW tuning platforms, offering powerful and reliable ECU calibrations with at-home flashing and full datalogging capability.