Bad news good news
 

went to the track last weekend.
last run Saturday started to hear what sounded like a gasket leak.
pulled the skid plate could feel blow buy.
said what the heck run it anyway on Sunday.
got home and went to the dealer, they said congrats you are one month out of warrantee. just leave the car here and for only 135 bucks we will tell you what the problem is.
I took the car home and put it up on the rack, pulled the skid plate and the heat shield off to find the split manifold.
called delicious tuning to ask witch replacement they would recommend. Zack says hey I think this is one piece with the cat, should be under federal warrantee.
went back to dealer, had a nice talk with the service manager and low and behold it was covered.

You got me at "I took the car home and put it up on the rack"

This is great advice. I will remember it once I look up the federal warranty. At least one other here with a boosted engine has had their header fail at the seam just like yours.