Stav The Aero Exhaust are already running on both N/A and Turbo applications both sides of the pond with no issues. They come in a range of sizes and are in component form so can be built to what ever spec is required. As spikey originally posted and he is running a N/A car. With 2.5 inch system I fail to see why there would be issues anyway, but I bow to your obvious supperior knowledge

If you care to look at the other companies selling the range in my link you'll see it's not some cheap crap that you buy from billy bedroom.

Totally upto anyone if they choose to but or not too buy, BUT it's documented that the systems do work, and they are quiet which again was a requirement in the original and subsiquent posts...