Hey thanks Ed for the reply. I have adjusted min air, and tps voltage. As far as the speedo goes no it doesn't bounce or do anything funny. The plugs are Ac Delco RS the kind specd for the engine. The egr ports and valve was cleaned during the build, and it is functioning properly, thanks for the idea's though. I'm thinking about moving the pressure regulator closer to the tbi for a better reading. It might be giving false reading due to it's current location. Thanks for the reply