I have a 97 'Lude w/ AEM CAI. Its in the instructions to remove the vacuum box and all lines. There should be caps on every nipple of the throttle body to replace the removed vac. lines. I believe there's three nips to be capped...maybe only two. I have no problems now as far as that goes and I've been driving with it since 30k miles ago. If you need I might be able to find the instructions and tell you exactly where and what it says.