I have no room for spacer but do have an Eddy Air Gap intake so hopefully that helps some. Mine is throttle body. I haven't driven it much yet. Just haven't had a chance, but I'm dying to drive it more. Haven't heard the pump yet, but then might with more driving. I live in Florida so it's going to be hot, hot, hot in the Summer. From what you're saying, I guess I may be ok though, other than some pump noise when it's really hot? Thank you for information.