BMW N55 Custom Bench Flash Tuning (335i, M235i, 535i, & More – 2011–2016)

Our custom bench-flash calibrations for the BMW N55 single-turbo inline-6 deliver the perfect blend of performance, drivability, and reliability. Unlike generic flash tunes, our WinOLS-based custom development allows full control over fueling, boost, ignition, torque management, and VANOS strategies. Whether your N55 is stock or running upgraded turbos and fueling, our bench tuning service ensures a calibration built precisely for your setup.

Key Features

• Engine Coverage – BMW N55 single-turbo inline-6 (2011–2016)

  • 335i (E90/E92/E93, later years; F30/F32)

  • 135i (E82/E88, late models)

  • M135i / M235i (F20/F22)

  • 535i (F10)

  • X3/X4/X5/X6 35i models with N55

  • Other N55-equipped BMWs (2011–2016)

• Bench Flashing Service – ECU tuned directly via bench (DME out of car), giving complete access to all critical maps

• Custom Calibration via WinOLS – True binary-level editing for fueling, ignition timing, VANOS, torque limits, load targets, and boost control

• Performance Optimization – Support for intakes, downpipes, turbo upgrades, intercoolers, fueling upgrades, methanol kits, and full E85 setups

• Transmission Support – Optional ZF8HP and DCT shift map optimization for faster shifts and higher torque capacity

Benefits

• Significant horsepower and torque gains across the RPM range

• Sharper throttle response and reduced turbo lag

• Optimized fueling for pump gas, race fuel, or flex-fuel/E85 blends

• Knock-safe ignition strategies and reliability-focused torque management

• Smooth drivability and factory-like refinement under normal driving

Compatibility

Custom bench flash tuning is available for all BMWs equipped with the N55 engine, including:

• 2011–2015 BMW 335i (E-Series & F-Series)

• 2011–2013 BMW 135i (late E-Series)

• 2012–2016 BMW M135i / M235i (F20/F22)

• 2011–2016 BMW 535i (F10)

• 2011–2016 BMW X3/X4/X5/X6 35i

• Other global-market BMW N55 models

Process

1. Remove your ECU (DME) and ship it to us.

2. We perform a complete bench flash with professional tools.

3. A custom calibration is built in WinOLS for your mods and goals.

4. Your ECU is returned ready to reinstall and drive.

Professional Assurance

Every N55 calibration is written from scratch in WinOLS, ensuring precision and reliability. From stock single-turbo cars to high-power builds with upgraded fueling and turbos, our custom bench flash tuning delivers proven results with OEM-like refinement and safe power delivery.

Meta Description (SEO)

Custom BMW N55 tuning via bench flash and WinOLS. Available for 2011–2016 BMW 335i, M235i, 535i, and other N55 models. Unlock horsepower, torque, and drivability with safe, reliable custom calibrations.