The CSI has nothing to do with the engine revving higher during start (that is what the ISCV does), it just makes sure that there is enough fuel with it is revving up like that.car should rev to about 2k right at start up if the csi is working properly. and come down slow and smooth till it warms. if it feels like its bogging down then the iscv might be suspect along with a poor flowing csi,(csi doesnt atomize right). need a little more info for a better diag.
There is a "Search" button on the top right of the forum, you will get very far utilizing that tool. But FYI, it is the Idle Start Control Valve (ISCV).what is the ISCV?