Discussion
Where on the exhaust are you talking about? The manifold-to-head studs are M8x1.25, as are the turbo-to-downpipe studs. I think that the manifold-to-turbo bolts are also M8x1.25, but that's a guess. Then, there are the bolts on the three-bolt flanges at the Y-pipe and at the muffler, which I don't remember at all...
jdearden said:
It's the turbo to exhaust. If u take the gasket out surely it will leak and start blowing
No - as you have just found out, they leak and start blowing with the gasket present! So long as the faces are clean and flat, you won't have a problem. It's what was done to the Ford WRC cars to obviate the same issue 
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