The APR Suspension Control Unit (SCU) Upgrade directly replaces your factory suspension controller with a new unit that enables advanced control over your vehicle's factory electronic shocks. The factory controller only operates in a "soft" or "stiff" state with no behavior in-between, despite the incredible capability of the factory electronic shocks. Our controller has advanced programming that takes various inputs to provide fine-tuned control over the shocks in real time. The controller still retains factory comfort and sport functionally, and it doesn't compromise ride quality for performance. However, both modes rapidly increase performance depending on various inputs such as acceleration, brake pressure, G-forces, steering angle, speed, and damper shaft velocity.The experience is absolutely transformative. For the casual driver, the vehicle is more comfortable and rides better than stock. Uncomfortable bouncing and stiffness are reduced, and the car settles faster to provide increased stability. This is accomplished by using the full operating range of the electronic shocks to provide a pleasant experience when you're driving normally. But once you begin pushing the vehicle, the controller quickly adapts to provide performance you never knew was possible from the factory shocks. Even on a straight-line launch the system will help control weight transfer so you can improve your 60ft times for better acceleration and better times in the quarter mile. On a twisty back road, or on a proper track, the controller adjusts each shock individually to provide the grip you need to cut faster lap times with more confidence as the chassis is more balanced. It improves weight transfer on corner turns by allowing a smoother transition, all without the shocks loading the tires, while also reducing overall body roll. Simply put, your vehicle will ride and perform better in every scenario and stays true to our mantra of performance without compromise!

Fits 2015-2018 Audi A3 Quattro/A3 Sportback e-tron - 2017-2020 Audi RS3 - 2015-2020 Audi S3 - 2016-2023 Audi TT Quattro/TTS Quattro - 2018-2022 Audi TT RS Quattro

• Retains various factory levels of switchable performance: Ex: “Comfort” vs “Sport”
• Advanced signal processing provides real-time changes lightning fast speeds
• Compatible with aftermarket springs, stabilizer bars, and other upgrades
• Optimized performance, handling, and cornering during spirited driving
• Reacts in real-time to driving style to provide comfort or performance
• Fully 3D-mapped to the capabilities of your factory electronic shocks
• Provides full dynamic control over the electronic shocks in real-time
• Optimized ride quality and comfort during normal daily driving
• Optimized launch control, traction, grip, and weight transfer
• Unit is completely reversible and removable without a trace
• Unit is unlocked and fully upgradable in the future
• Reduces 60ft times for improve acceleration
• More confident driving experience
• Direct plug-and-play upgrade