Why risk it? I had a cattless dp on order and decided to ditch that idea after reading too many horror stories and issues/potential issues/"fixes along with those issues. To me, it is not worth it. Ill spend the extra 78$ (Invidia cattless 291$ VS CNT Catted at 369.99)VS HUNDREDS in having to have the car tuned out. Think i am going with the CNT catted downpipe. Cobb is expensive, my next choice was the Invidia at 509$, until i found the CNT catted downpipe listed for 369.99. I am running stg1 plus at the moment and i am BORED! I just dumped 720$ in a winter wheel/tire set-up OR i would have had my downpipe on order already! DAMN MOTHER NATURE!
Yes, using the stock summer tires in 4" of snow is sketchy beyond belief!!!!!!!!!