Exhaust system on a c207 e220 Cdi?

[Diaconu Emy]

Hello! I have a Mercedes e class, e220 cdi, 170hp, it s a diesel, and you know, I’d like to make it louder but I don’t know if a straight pipe will make it sound good. Firstly I’d like to know if anyone has ever done it, like straight pipe all the way, or with the back cat still in place, and how was the sound?
And secondly. I would like to get a v shape flap module, so I can put it in the middle of the exhaust system and have the partially stock exhaust (with no down pipe) when I don’t want the sound, and a fully straight pipe when I want sound, what do you think?

 

[LostKiwi]

You summed it up.
It's a 4cylinder diesel and has a turbo.
It will never sound nice or 'sporty', just loud(ish)