Nothing blew up on a dyno, one car was blowing coolant out of the radiator cap at low boost. Going a little higher with the boost and testing a different cap pushed more fluid out and it was clear the it had combustion getting into the cooling system. The customer took the engine apart and it was clear the heads had a issue in the combustion area where the gasket needs to seal. It is likely Kyle received the cores that were used in this condition and it was missed. Kyle is taking care of the customer.