So this thing might seem a little stronger running once the warm weather comes? I finally got a chance to drive it good today, and I can feel a bit of difference in power. My bottom end is still a little soft, but it does pull a little harder in the top end. And it seems like they extended my power band a bit. It used to start running outta steam above 2k rpms, now it keeps pulling well past that. I guess I was just expecting to much from them. And I thought it was odd that my egt's only rose 100* (not that I was expecting them to jump much with the 275's) but my boost didn't go up much. I can get 20 out of it now, was only hitting 19 before ( I know, whoopdee doo). I'd say its about where it was power wise when I still had the HO pump on it, although it still doesn't have quite the bottom end it did.