KW DDC ECU Coilover Kit Audi A4/S4 (B8) Sedan QuattroKW DDC ECU Retrofit electronic damper control with adjustable ride height Experience the innovation and quality of high end engineering: the KW DDC (Dynamic Damping Control) ECU (Electronic Control Unit) coilover suspension, made in Germany. For the first time with its electronically adjustable dampers, the KW DDC ECU coilover system combines intelligent, app controlled suspension tuning with ride height adjustability. This gives you the opportunity