Tech Article Title Author Date
Physical Differences Between K03 (MY 2001) and K04 (AWE kit) driveslikegranny 2004

As you know, both turbos look quasi identical from the outside. However, there are some significant differences in blade design between the two units. I took these pictures through a borescope before installing the K04 and after pulling out the K03.

Compressor inlet (from airbox)

K03 K04

Compressor outlet (to inter cooler)

K03
K04

Turbine inlet (from manifold)

K03
K04

Finally, turbine outlet (to cat)

K03 K04