TGK Motorsport Audi 4.0T Blow-Off Valve Conversion KitTired of dealing with boost leaks caused by factory or aftermarket electronic diverter valves? The TGK Motorsport BOV Conversion Kit is the solution you've been looking for. By switching from electronic diverter valves to a mechanical blow off valve (BOV), you can eliminate the common issues associated with electronic valves. Our BOV kit uses the factory vacuum and boost reference port to ensure the valve stays fully closed during boost, eliminating