1993 accord LX- Thought I had the problem solved by taking the 6 small port plugs out of the emissions system and cleaning up all the buildup plus opening the ports back up that were plugged. When I put a vacuum gauge on the black rubber hose going from the control box to the EGR valve there is an initial buildup of vacuum upon acceleration but within seconds it drops off to zero. I switched control boxes and used one my brother had from his 91 accord he parted out and still had the same result. Mpumas has been giving me a lot of help but no luck. My daughter is going to apply for assistance with the state and see what happens.Any other suggestions would be appreciated.