what should the vac be at on these cars? i just did another vac test, and blocked off a suspected hose, and still the same 18 to 19in. and i just took some maf readings, and i get 5.6g/s at idle and 159g/s at wot...converted its 21 lb/min whichever is easier..is that a normal reading?
If you 18 -19* it doesnt sound like a vac leak to me. Possibly just a whack tune IMO. If it was me.... I would unplug the battery for like 30 mins... then plug it back in. This will force the PCM to relearn the fuel trims.... which could take several med-long drives.