Because despite the location of the fuel injectors, there's a throttle body that handles the airflow. Even a carb is a throttle body of sorts. With the '88's, the throttle body has the injectors included in the package. With SMPI, the injectors are no longer included, but it's still a throttle body handling the airflow, as dictated by the throttle blades,.....as dictated by your foot. Intakes are also different, and cannot be swapped unless you swap the heads too, or get the heads drilled to accept the manifold.
Lol it sounds really really shady, i understand and can see the effects on a carburator plate, on a TBI plate i can't see it since it also isn't having an effect by vacuum or venturi signal, but can see how buffeting could help as the fuel and air pass the plate together, but i have no damned idea how in the hell a plate behind the TB on a MPI system does a damned thing even a buffeting plate.
Someone needs to test these
TB spacers on Magnum engines do nothing. That is pretty much a known fact. They could work on other MPI engines, just depends on the intake design. If you notice the magnum engines already have a 10 inch drop below the TB and spacing it up another inch does nothing
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