Yea you better check that before you start loosing boost.

 

Missing? kinda hard for the spring to work if the ball is missing.

 

yea that could be a problem

 

You definitely do need the heavy spring. The lighter one doesn't even achieve stock boost levels.

When you go to remove the spring, be very careful that the ball doesn't come flying out. Trust me, they can be a real B*tch to retrieve.

 

yea the heavy spring is the only way to go with an evo...