through a HUGE hassle to get them installed correctly I am pleased for the most part. I expected a bigger difference in get up and go. It's better but nothing super amazing. As for the noise they sound almost stock. They are just a touch louder then stock and I do have a slight whine above 70 but it's tolerable. When I took my favorite 2am canyon drive I was able to stay in 3rd the whole time, before I had to dip into second on quite a few turns, now I can carry my speed through and still have good exit acceleration. It also seems to rip through the revs a whole lot faster then before. I have pinned 1st against the rev limiter a few times since I got them installed. Let me know if I can offer any more feedback.