When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
Is throttle valve supposed be fully closed when idle if there is IAC in system?
On most road cars, once the engine is running I set the throttle plate to achieve minimum required idle with IACV closed.-Gavin