with the 2.190 intake valve you shroud the valve with a smaller bore,, it probably is a gain but usually we only do it with a 4.375 bore or bigger

at a 2.190 the intake valve seats completely on the exh seat where the seats interlock,, this may cause issues in the life on the valve job, though for a drag race car that you freshen every 200 runs or so its fine,, for a real street car,, i dont know if id do it