With my Tilton being so light, The throttle is VERY sensitive. The engine does not rev any higher or more than stock. At freeway speeds, I am at the same RPM I would have been on the stock flywheel. My engine now only has to spin 16 pounds instead of 54 pounds. From what I have read, The JWT/Nismo combo is one of the lightest of the easy to drive combos. It is still a 12 inch combo and weighs about half of the stock set-up. Since it is a 12 inch combo, I would think you would free up 5-10 hp in the drivetrain. THe tilton frees up 20 because of it's super light weight and it's 7.25 inch diameter. THe carbon twin disk tilton frees up 30 hp. THe more gains you want, the more drivability you will have to sacrifice. Let's say a stock clutch/flywheel has 100% slip (when you let off the clutch and the clutch starts to grab but slips until you let off the clutch more), The jwt/nismo combo would be like 90-95% slip. The Tilton I have is like 5% and the tilton street is like 25% and the carbon tilton is like 30%. So when I let off the clutch, the clutch grabs super hard and will stall VERY easily.