If only You knew how many 'teeners were running around that look just like that, "runs like crap when it's cold out, & doesn't want to 'kick down' off fast idle", chances are 50/50 or higher over 85K.......I've punch & chiseled bunches of intakes, then sent them to get 'boiled out' while I worked on the heads, usually timed-out good......when the parts/gaskets & clean intake came back, I had everything opened & cleaned ready for them.