you'll notice a big difference on when you shift. At the track, I ran 15-20 times a night, over and over, each time shifting differently. I shifted at 7, 7.1k, 6, 6.5k, and everything in between. I definatly felt the biggest and saw the biggest improvements shifting around 6500. And yeah! I was racing my friend in another WRX down the street, and I would shift at 7000 and he'd pull a little, i'd shift at 6.5, and I'd pull. So yeah, everything that people are saying about the power band ending at 6.5 is def. right!! BTW I dump the clutch on a launch at 6500 rpms too! !Laugh! But yeah, Kaaz Hardened Gearsets are on the way as well as new stronger clutch and flywheel, and pressure plate or whatever else I need to make in stronger!