i made one of those homeade boost controllers. Today i finally drove my car for the first time under boost. I only want to run 8psi and i had to keep letting off because the boost keep going way over 8. What ever i did to the boost controller didnt do anything to the amount of boost. I also have an external wastegate with a 6psi spring in it. Im pretty sure the boost controller is set up right. I have no vacuum leaks whatsoever. Any ideas/suggestions?