Ksn

Hello, I would like to change my stock clutch for a clutch master stage 3 (link) because I want boost my scion tc 05 maybe by the end of the year, the question is, it's ok if I change the stock clutch for the new one? or I will have less performance?, my scion have a full greedy exhaust system and Intake.

That_Kid_Ju

Clutch has no effect on "performance" the way I think you are considering it. It'll take some getting used to at first, but the clutch feel will come sooner or later. I'd suggest ACT 6 puck sprung clutch since it's rated up to 450 ft-lbs wtq. In my opinion, one of the better clutches that won't destroy your clutch master within a few weeks.

SloTC1

You don't need a clutch that strong. You won't be putting down the power enough to need a clutch that strong. Go with the ACT street clutch. 32% stronger than stock and it'll handle the power you'll be putting down. A clutch that strong will most likely just out hot spots on your flywheel.