finally got around to installing my smy gauge cluster (thanks irickchad, still tryna leave you feedback but the system is down). with autometer pro comp mechanical boost gauge and aem wideband o2.
it seems that my boost gauge reads about 22 in vacuum while the ap reads around 10.2 (both readings at idle). boost is the same reading. whats the deal with this, and is it something i should be worried about?
edit: i also notice that boost gauge sits at 2 in vacuum when off, so its an even 20 when in idle. still, 20 vs ap's 10 is a big difference.