Fulton 1

iTrader: (9)

Recently had my 2005 GTO retuned with LS2Edit. The only mods are CAI and catback. Now I'm noticing that the idle is really surging/hunting with the AC on. It doesn't drop too much so its not as if it wants to die, but it idles high and bounces between about 900-1500rpm. This seems to happen only after the car is warmed up and its most prevalent when pulling the trans out of gear while coming to a stop or during a slow downshift (eg when approaching a corner in a residential neighborhood or something like that). Seems that a few other folks with LS2Edit tuning on the '05's are having the same issue and nobody seems to know of a resolution or whether there are any parameters available in LS2Edit (or HPTuners for that matter) that could curb the problem.

Is anybody familiar with the LS2 PCM enough or LS2Edit to have any thoughts on what might be causing this problem or how it could be addressed? Having the involuntary cruise control can be a major PITA sometimes...