Stage 2 AWD Controller Software for Gen 5 Haldex

APR Stage 2 AWD controller software for Gen 5 Haldex. This calibration requires the APR Stage 2 Spring for Gen 5 Haldex and an APR Ultralink for at-home flashing.

Upgraded APR Stage 2 AWD Controller Software represent the highest level of performance optimization available for Gen 5 Haldex-equipped vehicles equipped with a factory controller. While Stage 1 enhances clutch engagement within the factory hardware’s operating range, Stage 2 expands that range by integrating APR’s upgraded pressure relief valve assembly. This allows the system to safely command significantly greater clutch pressure during launches and high-load events. This ensures that increased engine output is effectively transferred to the rear axle. The result is stronger launches, faster and more consistent AWD engagement and improved traction during aggressive driving. Despite the increased capability, APR Stage 2 retains full OEM integration and system safeguards, preserving factory drivability during normal operation. Clutch pressure is intelligently reduced after launch to minimize unnecessary drivetrain strain while maintaining performance where it matters most. The software and hardware are engineered together as a cohesive system, delivering meaningful performance gains without compromising reliability or daily usability. For enthusiasts demanding maximum AWD performance from their platform, Stage 2 completes the drivetrain upgrade path confidently putting power to the pavement when it counts.

Features:

• APR Stage 2 Software redefines what's possible using an OEM Haldex controller
• Features everything in Stage 1, with the addition of enhanced calibration designed to take advantage of the required Stage 2 hardware upgrade.
• Switchable on-the-fly AWD Mode & FWD Burnout Mode: Using the factory hazard button, drivers can instantly switch between AWD Mode and FWD Burnout Mode.
• Faster AWD engagement: APR recalibrates the factory Haldex system for quicker rear torque transfer, helping reduce hesitation and improve traction when accelerating hard.
• Advanced Launch control: Maximum rear torque transfer and launch consistency for higher power levels and repeated hard launches, combinable with supporting ECU and TCU enhancements.
• Optimized clutch pressure control for launch conditions: +22 Bar measured pressure increases over Stage 1 APR AWD Software for Haldex and +30 Bar over Stock!
• Minimal hardware requirement (spring change / direct replacement part) compared to the competition (MS100267)
• Supports highest achievable clamping pressures under increased demand, with clutch pressure backing off post-launch to reduce strain.
• Built-in speed-based safety protection: If rear wheel speed exceeds 30 KPH while in FWD Burnout Mode, the system automatically restores full AWD operation. When speed drops below 30 KPH and conditions are met, FWD Burnout Mode resumes.