[NY930]

Hi Guys,
I don't want to unnecessarily point the finger, but I need your advice.
I had a New York shop install a new Intercooler, K27 and headers and then I cracked a Mahle cylinder right down the middle. This failure happened in less than 100 miles after my shop did the change out installation of the IC, new turbo and headers.
The pistons looked fine but the cylinder was wasted.
I'll try to post a photo. Do I have to subscribe to post a photo or maybe I can't find how to post a photo while using my iPhone.
Is it possible that my shop missed something important that created an over boost situation?
What should I think?
1987 930 in Long Island.
All comments will be very appreciated.
Please feel free to contact via email if you prefer.