It won't be anything to do with the map unless it's been mapped for different injectors and it's running incorrect at idle.
If it has just had an ecutek tweak I doubt they would of touched anything idle related or idle control related. ECUTEK may of been able to adjust idle but I'm not sure the ECUTEK software has the ability to change idle control parameters.
You can knock the idle up with ecuexplorer
http://code.google.com/p/ecuexplorer/downloads/list, but you will need an OBD cable to do it and it will reset if you reset the ECU.