Anyone? I am confused as hell. Now it seems the T28 is too big. I phoned the salesman and he says the TD04H-09B/14 is even bigger! ( and its from a diesel SUV, does that matter? ) Someone on here posted the A/R of a TDO4 or TD05 and it was quite small, close to that of a garrett gt1548 but that turbo seems so small. So now I'm stuck, the car is basically stock, I want to run 0.8 to 1 bar boost and I need a turbo that doesnt run out of steam at high revs. The garrett gt2554r has an A/R of 0.80 (c) and 0.64 (t) which is much more than the td04 it seems.