Hi First there is a YouTube video on removing the right intake manifold. I removed the airpump & the right intake manifold. Then I replaced what vacuum lines I could get to with new silicone lines. I replaced the vacuum reservoir, the X vacuum connector, and the air check valve? Its vacuum operated on used the Mercedes one its cheaper. It took care of the SAI codes I was getting but I must have knocked off the coilpack wire on cylinder #1. Its a PITA!