That was the initial thought, he sent it to Garrett and they said it was fine. He also recently said the turbo is fine, although didn't say why he deducted that. But to me, the only major things changed from setups is the turbo and the turbo manifold. It obviously isn't a leak in the charge piping since the map sensor reads the boost, it isn't a leak in the IM or with piston rings because the greddy kit makes power just fine...
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