Originally Posted by baconbits
Yeah... my FX250 and OEM WRX flywheel even has chatter/shudder on starts. Either I let it out slowly at 1000rpm or normally (like a stock clutch) at 3000... anything in between is horrid. When I'm having fun driving, it's a dream.
It's the price you pay with upgraded clutches, I guess.
It is not referred to as chatter on starts. That is judder. Judder is caused by an inconsistent slip between the clutch and FW. This happens with many, many, many aftermarket hi performance clutches. Want a grabby clutch to hold the power? It does not slip very well.