Thanks for the replies, guys.
I've watched all the exhaust videos.
I liked the Harman Motive / Vishnu Tuning exhaust sound. I wonder if it gets much louder with catless DPs?
I also liked the Autobahn Exotics exhaust sound.
Borla exhaust's sound is very nice, but with catless DPs it is too noisy... Other manufacturers' exhausts are too lould as well.
I'm confused. Maybe I should get catless DPs and leave the remaining parts of the exhaust system stock? But I want the max power whit min noise...
And could someone explain, what the difference between 2.5" and 3" DPs is?
One more question regarding Vishnu: whats the difference between "Rev. II Plug and Play PROcede Race" (
http://www.vishnutuning.com/V3PNPRace.htm) and "Vishnu PROcede v3 PNP Computer" (
http://www.vishnutuning.com/bmw_zero.htm)?. Which one should I get?