I'll entertain the idea, because I have not spent hours with Z's on the dyno like I have with Mustangs, Lightnings and diesel trucks. Perhaps my car has some unseen issues, but I doubt it. It always ran well, and ran like my friends JWT tuned TT's that I drove. I didn't relly start to question anything until I learned how to tune.
What still kills me is..... why would they tell me it shuld run that rich? Just a flukey case of an uneducated tech? From a tuning standpoint, nothing could be more wrong.