Yes, I was thinking about this and emu black both similar cost, plus mapping but I would rather have bosch ecu doing what's necessary to properly run turbo engine(my car is already "mapped " using maf and lambdas,but I'm not 100% happy and I know it's can be done so why not ,only problem is to find someone who can do it...
You are going to be hard pressed to find someone who will do this remotely, and it will not be cheap. If you think you are going to find someone who is going to implement a bunch of custom code and is going to be expensive, comparable to the cost of an aftermarket ecu and tuning.