Hi go baby go,
Interesting concept....
Personally, I reckon it's a ridiculous idea; sorry but no other words for it. Forget the lag from the compressor to the engine, what about the fact that you will dump a significant portion of your exhaust heat in that 2 metres from manifold to the turbine.
Turbo's are all about heat, the lower your inlet temperature, the less efficient you will be, plain and simple.
I cannot see the point; if it's just to avoid a defect, there's plenty of other ways around it. Spend the money on making a turbo setup look discreet and end up with more power anyway!