Slk Power Upgrades....

I just got a 2001 SLK 230 Kompressor, and just wanted to know a few things. I plan to put the ASP pulley kit on the car, but still want more power. Can i use a chip along with the pulleys? And is Nitrous a bad idea for my car, because its supercharged? Also wondering if there are any exhaust worth the money.... I looked at the Supersprint one, but thats about it.

Thanks

K&N filter, Eisenmann exhaust, ASP pulleys and Tuner-Werks chip will do. All of them are available.