Thats how its wired right now, but when I put the vacuum gauge on the vacuum amp EGR output, I get an instant pop of high vacuum off idle, perhaps that mysterious vacuum amp is bad? Interesting note on my Weber DFT from the smog police here in CA is documented exactly where to drill the EGR port on this carb, just like your post! But they dont tell you if you still have to run the amp...? I think It will run better straight off the carb, crazy amp out of the picture.