Hey I noticed in one of your previous posts that you mentioned you were running 6-7 psi. I know from experience that edelbrocks cant handle much more than 5 psi. The manual even says that between 5 to 5.5 is the best. My pump was running 7-8 and it ran like crap--would always stall if i applied the brakes. After putting on a pressure regulator it solved this problem.