I had a chance to play with one of these today. Hooked up to a 2004 Grand Marquis, 2004 Chevy pickup 4.8L, 2008 Mustang 4.6L, 1998 Nissan Maxima. So far I have not found the ability to perform an evap service bay test. I didn't expect it on the Maxima. I assum... Login to read more.