Brera 2.2. Centre Box Removed From Exhaust
I've taken the plunge and had the centre box on my Brera 2.2 removed and replaced with a straight-through exhaust. The back boxes are still standard.
The result? A great improvement both to sound and performance. It's not noticeably noisier at idle or with normal driving but there is a glorious throaty, popping sound on the overrun a bit reminiscent of my old Alfasud. It sounds great under hard acceleration as well.
It really feels like the engine is able to breathe a bit now. I had the work done at my local Alfa specialist ProAlfa. My Brera has previously been remapped by them and I was concerned the exhaust work might mess things up a bit but not a bit of it.
I had a look at the removed silencer and what I didn't realise was that the box itself is straight-through with the silencing material around the centre pipe to absorb the sound waves. As somebody else has said, it is a big old heavy thing and as far as I can tell it shouldn't have been on there in the first place..