Was doing some digging about the free flow exhausts. Came across this kinda exhaust system. Does anyone know what exactly it is??
and how does it effect the perfo of the car which its installed in??
this thing is really boggling me.

please share the link, to assist me understand your question

http://www.google.co.in/imgres?imgurl=h ... 24&bih=667
I could not find the link! found this image though, looks like an extra pipe welded on to the exhaust before the muffler.
Any info on this??

Up to now, it's not yet clear. However, if you need new exhaust parts, I suggest you visit racepages.com. I've seen their list and I think it will be helpful to you.