The shop who did the machine work on my block, builds diesels for tractor pulling. He said that a few of his big customers run 175-200 lbs of boost! I didn't even know a turbo could do that. Valves the size of baseball's get shoved backwards through the head, when things go wrong.

 

Thats a bad *** 6.4 bet she lays some rubber. I know my fare share about diesels as well as miatas. Anything with a turbo is cool in my book.

 

200 is nuts, never seen that.
but I've seen/heard 100psi on some crazy snail and it sounded literally like a jet