What about mounting the Sniper to a Performer. I also saw a vid where a duel plane screws with the MAP sensor. Have to add a spacer or cut down the intakes divider. Is this true?
Yes - sort of. Dual plane manifolds were made to generate a signal that a carb needs, but TBI EFI systems don't need that. And EFI needs a map signal that represents the entire map that the engine sees, which is more consistent when using an open plenum. An open spacer or a cut down divider is a way to do that when you start with a dual plane manifold.
