Ian
I have the librands ,quad pipe,rear exit exhausts fitted to my S1 -
- the sound is not too intrusive,particularly on tick over/idle.I also fitted an ITG air filter which further improves the sound (and pick up!) on acceleration
I quite fancy the side exit pipes but a number of people have commented that they can be a bit
'wearing' on a e.g. a motorway run....
James
