[George @ BMS]

Originally Posted by jomama

it allegedly fits both a4 and s4 cars, so it seems a bit suspect. at least the plumbing has to be different.
https://www.ecstuning.com/b-integrat...t/ietpck1~int/

Visually on the tech documents the two coolers look the same. I reckon the size remained the same for lag reduction.
What is even more interesting is the Twin Turbo RS4/5 got a charge cooler instead.