[mike@x-ph.com]

Originally Posted by SemtexGT

I've never understood these "high flow cats". Are they able to pass emissions standards at MOTs? If not, what is their purpose over a catless downpipe?

I'm in the process of getting an M340i and I see the forums exploding here about downpipes but I couldn't, with good conscience, drive the car on public roads without a cat, I'd be too paranoid all the time. (I live in Europe, so things are much stricter about exhausts here)

Could someone enlighten me on this, would be much appreciated

1- No fuel smell
2- quieter than catless