Yes - I don't have access to any test data, but seat-of-the-pants impression is that braking is slightly improved. Ceramic pads also resulted in no squeal. If you want more info suggest you call Alex @ Tire Rack - they carry both the Hawk ceramics and the street hi-perf. pads (which also generate much less dust) I have the performance Hawks on my Audi A4, and they resulted in greatly diminished dust as well - a but more squeal on occasion.

Hm. OK, that sounds fair. thank you much for that info. I will change them when its warm out. The brake dust is insane.