Well I just rebuilt my engine have about 300mi on it so far and I'm only getting -10 in hg on my glowshift boost/vacuum gauge. I sprayed everywhere with WD40 to try and locate a vacuum leak and haven't been able to locate anything. On my AEM Uego wideband I'm getting 14.5-15.5 afr driving under normal load and idle. It of course goes lean whenever engine braking. But I cannot find any signs of a vacuum leak and its driving me crazy. Correct me if I'm wrong but isn't the normal vacuum range around -15 to -20 in hg? I've looked all over and haven't been able to find anything (including the tsrm). Any help would be greatly appreciated.