Here is what is going on, i've got a Y7/Y8 mini-me in my EF. I have been using the A6 manifold for awhile, and yesterday put on a Y8 manifold. Everything went well until start up. The idle fluctuates between 850-1200 when the RPMs drop you can hear the main relay click, each time it drops from 1200rpms. No CEL. The car is still OBD0. Anyone have any ideas? Thanks in advance.

 

gasket might be leaking? did use use all new ones?