Scirocco Register

What exactly is the purpose of a Grp N and A exhausts, and how are they different from 'standard' performance exhausts I know they're noisy, but that's about as far as my knowlegde goes!

Cheers, all!

Never heard of 'em personally...

They're designed for rally cars and they usally have a sound rating of about 97Db so they can pass scrutineering but you are able to add or removed baffles to increase or decease the sound levels.

Rich