The function of the EGR valve is to control the flow of recirculated exhaust gases depending on the engine load. Car 1K0906283A 1J0906283C EGR Vacuum Solenoid Valve For VW For Passat For Golf For Jetta For Beetle For Tiguan For Touareg. No noticeable power lag; the exhaust gas recirculation process does not affect throttle response speed. It eliminates EGR malfunctions, reduces turbo lag, improves combustion, and limits manifold fouling. It improves overall engine efficiency, resulting in a more stable idle, better fuel efficiency, and reduced oil pollution., Manufacturer: ROUSHI