What header are you driving with?
 

Those of you guys that have a header, which one do you have? And has anyone switched between either having a 4-2-1 to 4-1 or a 4-1 to 4-2-1? What do you like better?

I have the 4-2-1- from Evofusion.

Most people stick with a 4-2-1 since it gives better midrange power.