RE: Plenum gasket leak - symptoms?
Well I dropped it off at 8 this morning and they started in on it. Sure enough, plenum gasket is faulty and they're swapping it out. I greased the wheel a bit by having them do my 60k service as well and damn. It's not cheap. But maybe I'll get my truck back tomorrow and it'll have more power, better fuel economy, won't ping, and won't consume oil at odd intervals. And then I've got a shiny new set of 50-state legal ceramic coated shorty headers to put on, for even more power.