Smoking turbo issues....You do know that doesn't really coincide with DP right? I'm sure you have done your research. LEAKY TURBO SEALS. Besides the fact that if you actually do research that issue. Nobody has solid proof of cause for the seals going out. So you cant really point to aftermarket Downpipes.
I mean I read up on it for sometime before deciding. It just doesn't make sense. The only true way to be sure though is to pull the downpipe back off after running for awhile, and seeing if you have oil in your exhaust side. I can tell you though my exhaust is the same its always been. Just smells different.
if you say so... its just not a chance I want to take, personally... it seems to be hit or miss, yes some people have DP's and run them no problem and some people who are completely stock have the smoking turbo issue but like I said, just not something I want to take a chance on. Downpipe back will be good enough for me.