Quote Originally Posted by danewilson77 View Post
So the hole in the upper intake boot, and lean condition were what caused your clutch to chatter? Did you have an associated SES light (or code?)? Forgive me as I don't remember the exact scenario.
Correct. The clutch would chatter when the rpms would dip from around 1k to 500/600ish upon cold startup at idle. It happened for the first time on Sunday. I have only driven it twice since so I could get it back home. Chatter occurred both times. Rev the engine or push in the clutch and the chatter would disappear. Now it's perfect again. I have heard of other stock zhps chattering too.

I had 8 codes pop. 6 misfires and 2 lean bank codes. Once I saw the hole, I had no doubt that they were from the intake boot. I got the same codes months ago before I replaced the lower boot. (it wasn't big enough to mess up the idle though)