Fairly recently started to get into FSX (finally), and haven't really been following FSX-related stuff until now... Just wondering, has anyone managed to change the AI taxi speeds or the period of time before an AI will timeout and disappear yet?

for ai timeout aitpx is there but only for the original release. It will not work with sp1 or sp2.

Ye I got a message from the aitpx developer few months ago on another forum, they are not using FSX so have not gone any further with it we will just have to wait till someone else figures it out. Seems that MS moved some files around in sp2 and caused it to stop working correctly