You don't take the turbo off for it, the manifold on a standard turbo setup is above the turbo (unless you have a top mount big turbo setup then it's different). Just remove the charge pipe, the heatshields and brackets, then you can proceed to unbolt the 3 bolts ontop of the manifold to the turbo and the 13 or so nuts holding the manifold onto the head. You more than likely have a torn exhaust manifold gasket.