Bo had 4 cats , two per exhaust . Here you can see the right hand bank

I had the internals of the top cats removed , and a new freeflow silencer box replaced the 2 rears

A piece of the cat honeycomb

New rear silencer

The exhaust was also made slightly bigger at 50mm from the std 48mm . Unfortunately we couldn’t go any bigger due to space restrictions .

The car now sounds a bit more throaty , but isn’t excessively noisy as per my request .

It is early days, but it feels more responsive and seems to pull better at low revs. I’m hoping for an improvement in economy as well