Originally Posted by 16g-95gsx
60mm is the same size as a 1g DSM, you're right, but we are under boost conditions, so the actual air mass flowing through the TB is far larger for the same throttle size.
That's a tiny plenum for sure. Im sure there are topend gains to be had by simply increasing its size.
I figured you would laugh when you saw the stock one, lol, it REALLY is about the size of a D16 in a civic..
The new one is about 1.5 times the size or so