from the intake there is a hose that goes to a silinoid on the driver side fire wall, that then goes to the injection pump. I replaced mine for 26 dolloars and cleaned the hoses insides, and my problem with boost went away. and on the back of the pump near the oil can is a double bolt that has a spring loaded thing that smooths out idle, rplaced mine and my car runs like new with 240,000 miles on it.