Hearing the words dealership and qualified used together makes me . Unmetered air can only come from a couple of places. Seeing as how both banks are running lean I would suspect either a gasket leak UIM/LIM, TB or a leak between the MAF and TB.
99 CSVT Green/Tan
# 84 of 2760
Built on Wednesday, September 30, 1998
15.376 @ 92.00 MPH Stock
75,000Km
96 Contour GL
2.5L V6 ATX 170,000Km
. Unmetered air can only come from a couple of places. Seeing as how both banks are running lean I would suspect either a gasket leak UIM/LIM, TB or a leak between the MAF and TB. 
