Thank for the responses. What are the benefits/costs of running with a blocked EGR but unblocked ARV? Is the ARV hurting performance with the EGR blocked? Does it make sense that I should see such a dramatic increase in performance (shifts better also) or do I potentially have something else wrong? If folks are absolutely sure no harm can come to pass from a blocked ARV I just assume keep it plugged. I haven't tried to unblock it with the EGR blocked to see if there is any difference in performance.

None.