Ok I`m in a panic cos my mates told me Bedford are really strict on noise regs. I have a S1 with a Janspeen exhaust and a Hurricane (std cat) Thoughts please
should be fine as long as you still have the cat on - std car just with exhaust and induction - you tend to suffer if you remove the cat, have a high revving non std engine, or run throttle bodies/airbox and open filter...or combinations of the above