I didn't get a full 50% off the intake, I got 35% off and I think that's only because it hasn't been tested on a 5spd yet and I'm going to have before and after dynos.
As for drivetrain powerloss if you look on the dyno charts of our car on the cp-e site, which used an AT V6, they only hit 133. I lost almost 25% myself, according to their dyno charts the auto loses 1/3 or 33%

. I believe it too, the difference between the auto and manual makes it feel like I put an exhaust, headers, cold intake and even more on my auto. Considering my auto with injen made a 16.186 ET with a 2.467 60 foot and my stock 5spd made 15.7xx (I forget and can't find the slip) with a 2.45x 60 foot, the cars definitely have a large degree of separation. I couldn't get traction cause of my tires when I ran my 5 spd which is why the 60 ft's are near identical, but the ET's are so different, not to mention I feel a nice pull bagning through gears with the 5spd, something the auto never accomplished for me.
I'm anxious to see how well the CPE intake works out, if it works as promised, and maybe even better on a 5spd, I may get like 5% power increase off an intake, I doubt it but who knows.
-chris