I have seen on a couple of threads (cant seem to find them now) that your vacuum at idle should be around -20 -21. Is this correct? Im running 1.9rockers, headers, 3.4 pulley, zzp tune, al103's, 180tstat and fwi and only seeing around -10 at idle. 98gtp. Im still getting kr but its not consistant. one day it will be under .5* next day it will be around 3*. When im scanning im doing this at op temp. Just trying to figure out if theres a leak causing me to run lean. thanks in advance