GFB T9351 DV+ Upgrade Diverter / Recirc Valve - Audi S1 8X BMW M4 Carbon Fibre Diffuser Front and rear height adjustment

Front and rear height adjustment via threaded spring perches for on-car ride height changes

BMW F22 F23 ECU upgrade

The quad tailpipe layout delivers an OEM plus appearance that looks right at home on the Mk3 platform

Lower exhaust backpressure for improved engine breathing

E90 323i 325i 328i 330i sport springs

GFB T9351 DV+ Upgrade Diverter / Recirc Valve - Audi S1 8X BMW M4 Carbon Fibre Diffuser Front and rear height adjustmentEuropean manufacturers are pushing their engines to the limit. Get a DV to match. GFB's DV+ diverter valve range offers a direct fit performance solution for the weak factory diverter valves used on many modern vehicles. By retaining the factory ECU control and recirculating the vented air, the DV+ is a purely performance orientated product. GFBs DV+ design solves the longevity and boost leaking issues that are common with factory diverter valves, and