With a lockup, you can use oem spring, but if you dont have a drag cut tranny, it will be hard To shift at WOT. Since i'm a wimp, i use oem spring with a slingshot lockup (no new cover needed with that type of lockup). If i want to shift fast, i have to release the throttle a little bit to shift and i dont use the clutch at all. Envoyé de mon SM-S908W en utilisant Tapatalk