Hi. We recently bought a Brera 2.2 jts & we're experiencing a strange sound - only happens now & again. On acceleration, the the exhaust note seems to be very loud - sounds like like a resonating sound like you would get feedback from a microphone or speaker - as if the exhaust note is amplified & resonating through the car. Only happens when accelerating from around 2000rpm & seems to be accompanied by a loss of power. I've searched the web for some ideas & we did have the aircon regassed as some posts pointed in that direction, but it's still doing it. I know there are issues with the car (gearbox needs replacing & clutch master cylinder may need looking at as soon as we get home - only discovered after we'd bought the car in Peterborough & we're using it for our holiday around Sussex before returning to the North East in a couple of weeks).
Don't know if these could be related? Wondered about a split induction hose, but couldn't see anything & didn't think that would only make the noise intermittently? As I say, we're using the car on holiday at the moment & still have a lot of miles to cover so I'd welcome any advice as to what this could be - hopefully an easy fix & nothing too serious.