Thanks, that post seems to describe my problem. I have a boost leak tester coming, I'll check for leaks, and looks like I'll be looking for a used IACV unit. Before i changed the spark plugs, all of the plugs on the passenger side looked whitish, which i believe indicates its running lean. I replaced injector number 3. Can liquid gasket be used for the IACV gasket, or is it best to have the paper gasket?