OnCourse Software

When I hit CTRL+E to start engines on default 737 the start number one is called. then just before combustion start number 1 is called again. Shortly after number 1 stable is called. Then start number 2. Again just before combustion start 2 is called again. Then number 2 stable. Ok. My question is this. As it is very difficult to reduce the time it takes for the engines to spool up, is there an easier way for fdc to give a slightly longer period for the engines to start before calling start again. All I need is about another 3 or 4 seconds. Thanks for any help.