This is the first time that I heard that a slipping clutch disc will lower your ET. Nothing like the stench of a burnt clutch disc at the end of your quarter mile run. Or while you have to set your shift point 1,000 RPM lower because as the slipping clutch is doing it's thing you don't over rev the engine, OH, that's what rev limiters are for. I'll stick to a clutch set up that hooks thank you.