I have a TH400 with 208 adapter that I just picked up from Depdog...(thanks Glenn, it was nice shootin the breeze with you./forums/images/icons/wink.gif) I need to make sure I understand how to control the shift to my new implant. I'm under the impression that the 400's modulator is vacum controlled. So do I just tap into any ol vacum line and route it to the 400 modulator? or what? Thanks.