I love my Hybrd cooler. After thrashing the car around a bit I pulled over and put my hands on the entrance and exit pipes...entrance was warm/hot exit was cold. What more can I say? I'm running 0.9bar boost at the plenum which makes it about 14-15psi at the turbo and that's with a stock turbo that hasn't blown so the flow must be good.
Sydneykid, you've raised another point, by having a cooler infront of the radiator how much efficiency does the radiator loose?