It was in my coupe when I bought it. Changed it back to the Bosch because a recirculating valve should be in a 20VT in my opinion. Only difference I experience is the now missing "pst...."
Edit: strange that the name "Forge" is not on your valve. It is on the Original. Same shape though.
So seller had the R-Spec Type B twin piston dump valve for sale but since fitting its causing the revs to drop and then stall. Could it be the springs in the valve thats the wrong strength for the coupe?