hey, there was a thread on anti lag a while back, and it had links in it to a subaru website where someone had written and posted videos about anti lag on his my01 wrx, said it sounded and worked really well, i think he had a link ecu.
I think the post may have been lost when the server went down, search for it through google, and u might find it on the subaru forum.
There are people on that wrx forum who have run anti lag for more than 30,000kms without any turbo problems. Also, apparently ihi turbos(fitted to wrx for factory) are in general more reliable when anti lag is used compared to garrett turbos.