iv had this problem for a while now,when car has warmed up if i come to a stand still the revs drop to nearly 0 at times before jumping bk up to quite a low idle...it doesnt seem to be everytime tho,at times it seems fine
also on warm start ups everytime i start her up the revs drop likes it going to stall on me but it never actually stalls
ive had a new lamda sensor fitted and it isnt the maf as a subaru specialist has looked at it so they can both be counted out,and it isnt the dump valve sticking as last time i was ther he put oil on it as he thought that could be the problem,but unfortunately it is still doing it,any ideas?

 

Alright mate, wat dump valve u got fitted cos mine used to do that and i took the baileys off and put standard on its been ine since, so cub be that it's not closing proberly causin a air leak.