Quote Originally Posted by TassieGTi
1.8 Inlets are the smaller ones whether left or right, whereas the 9a 2.0 is the bigger one.
Big is not always better and light flywheels are awful on road cars driving around the street.
The later KR and SEAT spec 1.8 16v Digi 2 ADL motors also came with a 50mm intake, so it wasn't just the 2.0s