About 3 weeks ago I got a new new stainless steel exhaust put on my K5. Headers, into Y-Pipe, Cat, Y-Pipe and dual Flowmasters. Really makes the truck sound a lot nicer then it did with the glass packs or whatever the PO had put on there. However, I notice that when I get out of the truck there is a burning plastic like smell coming from under the truck, right by the drivers side (right where the Cat is) and I'm a little unsure as to what it could be. Kind of stumped really, any suggestions would be appreciated.