been happier. The car to me felt like it not only rev'd quicker, but smoother as well. It didn't feel like the engine was working as hard to bring the revs up. I can't say that I noticed THAT much of a difference, but there definately is some. I have the RPS segmented flywheel w/ the RPS sport and am very happy with it. I'd recommend at the same time if you have money to get DP's as well and install them while the tranny is out. My were stock/gutted and I didn't have enough money for them so I held off.