I'm curious about your purchase of a 'new' MAF and it being bad?? Did you get it on-line or from a dealer?

I am struggling with a similar issue, codes P0170 and PO173. I've purchased a supposedly 'new' sensor off e-bay. But I took the old one out, cleaned it with brake cleaner, and after a couple of starts the CEL went out. So I will hold onto the recently purchased sensor, but am concerned that it may be 'bad' but I would never know.

Joe