I'm not saying it won't work. It's just as I stated, not the most efficient way to make boost. Turbos are placed as close to the combustion chamber as possible by all manufacturers for a reason. The gases exiting the chamber is at the highest temperature thus the gases have the most energy and will be able to apply the most effective pressure to the turbine wheel. By placing the turbo futher downstream of the combustion chamber the gasses will have lost a significant amount of energy in the form of heat. Thus the reduced energy of the gasses results in the pressure applied by the gas molecules to the turbine wheel being reduced. You have heard of PV=nrT right? So in order to get the same boost you have to restrict the passage more for the gasses (by using a smaller A/R for example) which will lead to higher back pressures than would be the case if the turbine was closer to the combution chamber. This is why I say it's less efficient. Happy now?