Accelerating on the on-ramp yesterday and I gave it WOT, heard a "poof" and had zero boost. Feathered it up to 65 and drove on to work. At lunch, I noticed that it mad boost, up to 5" then zero again. Ran OK around town but on the highway, no power, black smoke 50mph tops...pissed off a lot of commuters.
EGT went waaay up, like bumping 1,000* unless I backed off. So I am thinking wastegate open(Banks BigHead) but my question is...Is there some other "pop-off" valve that could be stuck open? I unplugged the red wire to the WG and no difference.
I do run a Banks 6-gun, Ottomind, stock everything else. Checked boots, all good, no soot on firewall.
BTW, after I heard the "poof" I could still hear the turbo spool so I don't think it grenaded.