Continuing saga, Removed the anti backfire valve and blocked the anti backfire port with a half inch dowel. Slightly improved idle. I removed the EGR valve and found what looked to be a point of vacuum leak at the stainless steel pipe connection to the EGR. Cut the Stainless tube in two and crimped the ends till sealed, cleaned up the attachment point of the valve and re-installed everything extra tight then blocked all vacuum sources to the valve. re-installed crimped stainless tube to exhaust manifold. Though the engine still has issues this has made the biggest difference in the performance of the engine. Still no ECU codes. Will readjust idle settings today.