MSRP: starting at $219
With any sort of power added to the VW/Audi 1.8T engine, replacing the stock diverter valve can have a significant effect and is an advised upgrade for reliability. So Synapse Engineering released a Synchronic diverter valve that is described as a compact, zero-diaphram valve which actuates within 25-milliseconds. The unit allows either re-circulation or vent-to-atmosphere discharge. It's made from aluminum and CNC-machined components including a forged actuator assembly. It's also been tested to withstand a claimed 60psi. The 1.8T kits come with all mounting hardware.