[Herms]

Drove a friend's e92 with the afe filter, aftermarket exhaust and the powerchip tune. The difference is quite noticable, though I would echo Sticky's review in that it doens't change the character of the car, but rather amplifies and improves the existing characteristics. I thought the car was much more driveable and the low end was improved, though it wasn't suddenly driving like a C63 or anything. First to second gear shifts felt much smoother and I didn't feel the tendency to bog down in first gear on quick starts. It felt much smoother driving aggressively without having to get a perfect launch. The mid-range was also improved as I felt the engine was more responsive than stock just pushing the gas in any gear, and generally the car pulls harder all the way to redline.

Overall I was impressed, though I haven't had a chance to test other tunes yet and am curious to see how this compares to the AA tune.