You know, stangPlus2birds on the corral (Joe) mentioned in one of his posts that the ACT sensors aren't all that accurate - they don't show temp changes quick enough. Of course, he was his usual "my way or the highway" self when talking about it.
FWIW.
Course that doesn't matter when you control what the EEC sees with your switch. Just don't confuse it and the tweecer switch...