turboback

Was looking at the Miltek website Interested in the 'TURBO-BACK INCLUDING HI-FLOW SPORTS CAT' - but next to this it says 'Designed for highly tuned cars especially those with turbo upgrades' @ http://www.millteksport.com/exhaust.products.cfm?variantid=100 Does that mean i cant have...

Due to my current downpipe on the verge of disintegration, I've decided to treat myself to a whole new system. I know there's a couple of options out there (Blueflame and Milltek) but I wouldn't mind trying something a bit different and wondered if anyone's tried a full Supersprint race system...