joker machine AC + supertrapp 2-1. how many plates?

[MisterFul]

Hey all!
anybody know how many plates would be optimized for the setup i now have in my 99 sporty.
its a 883 converted to 1200.
i just bought a Joker machine AC and have a 2 to 1 supertrapp system on it.
any input highly appreciated.
cheers /K

[Tito]

Everyone is going to have a different answer. My bike, 96 1200 with a hi-flow mini a/c with a K&N, I settled at 18 discs with a closed cap.

[bobhopper]

I had a 97 1200 setup and I dynoed it 3 different configurations and I got the best results with no discs and no cap