if that seems to be working i am going to yank the upper intake. i have a feeling it might be so carboned up its causing injectors be sluggish for lack of better theory. with talking with some of the old timers around the shop this seemed to be a issue on the early fuel injection engines.
Yeah id say try that, but my upper and lower intake are spotless. I cleaned them about 5K miles ago (right when I dropped the first motor into my runner) and it still does that.