intake spacer
Think about what happens if you raise the intake up far enough to clear the OPSU - we're talking about a couple of inches here since the OPSU extends to the top of the intake neck.
First, you are effectively lengthening the intake runner by a couple of inches, which is going to kill the top end.
There will be a discontinuity in the intake runner shape, which means additional turbulence and resistence to flow, which may have negative impacts right across the rev range.
Hood clearance issues?


