The couple of times this happened to me, I had a rip in an intercooler pipe coupler or a pipe that looked like it was in it's coupler (but wasn't). Everything looked OK, but leaked heavily under boost. With the boost controller reading from the manifold, the turbo was running wide open to make boost. In one case, I overspun the turbo and tore up the seals. Once I said "What's that high pitched squeal", it was too late.

Corbin
'95 ESI-T

Now with more power and fewer leaks



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