ReFlex+ Advanced I/O Controller for BMW S63

Unlock advanced tuning capability for your BMW S63TU engine with the ReFlex+ I/O Integration Controller—built for seamless control of port injection and auxiliary systems.

The ReFlex+ is a cutting-edge controller designed to handle sequential port fuel injection and manage auxiliary components with precision. Originally developed to bring modern control to port injection systems, ReFlex+ now goes far beyond that—offering full or partial integration with factory ECUs using MHD, BM3, MG Flasher, and EcuTek.

Unlike outdated batch-fire systems, the ReFlex+ delivers true sequential fuel injection—injecting fuel at the optimal crank angle for maximum power, reliability, and efficiency. It can run standalone or integrate with your existing flash tune via CANbus, making it one of the most flexible tuning tools on the market.

Key Features

• Sequential port injection control for up to 8 injectors
• 4x Auxiliary Inputs:
• Flex Fuel analyzer input
• 2x 4-20mA pressure sensors
• 1x 0-5V sensor
• 4x Auxiliary Outputs (Low-side triggers)
• Crank and cam sensor inputs
• MAP sensor input
• Fully customizable via TunerPro RT
• Compatible with MHD, EcuTek, MG Flasher, BM3, and more

Performance Integration

With full CANbus support, the ReFlex+ can:

• Seamlessly communicate with the OEM ECU
• Enable real-time ethanol content integration
• Enhance Flex Fuel tuning with OEM-like behavior
• Add additional fail-safes and triggers within factory ECU control

Auxiliary Output Control

Use the ReFlex+ to operate:

• Methanol injection systems
• Nitrous kits
• Boost control solenoids
• Fuel pumps
• Line locks & relay triggers
• Custom setups

Why ReFlex+ for S63TU?

Whether you're running an S63TU, S63TU2, or S63TU4, the ReFlex+ is ideal for high-horsepower builds requiring precise fuel and auxiliary control. It’s used by tuners and racers worldwide to push the limits of the factory ECU, without compromising reliability.

Developed by Motiv Motorsport and protected under multiple U.S. patents, the ReFlex+ integrates features found in standalone ECUs that cost 2-3x more—all in a compact, quality-engineered package.

Included

• ReFlex+ Controller
• USB Cable
  
• Access to tuning software + base maps
• Email support