How do you get around the electronics with ecu ect? Friend has a sami with an AAZ and looking at the ALH but that is the hangup is the electrical part. Not doing an mtdi and not putting the dash in. I am doing it for him. I know mechanics but struggle on what is kept or removed for the electric.
If you send your computer out to a tuner, they can do an immobilizer delete, EGR delete, automatic transmission delete, anything you would need, as well as give you a stage 1, 2, 3, etc tune. It's going to cost more than a used mTDI pump however, vs keeping your donor's used eTDI pump plus paying $300-500 for tunes and probably the same amount additional if you hire out the wiring harness modification portion.
If you are looking for reasonable power and mpg, mTDI is just as good, and has proven to be far more reliable for those that have had both such as myself and many others.
If you're looking for enough power to potentially bend your ALH connecting rods, it's best to leave the tuning to a professional, and there is probably not a professional performance tuner of mechanical pumps readily available near you, so it is best to hire that out in the form of ECU tuning.
Without a skilled tuner, especially on an mTDI, you might have more smoke than his desirable under acceleration, when pushing for well over double the stock power output. Stock is 90 horsepower. These things are easily capable of double that with injector nozzle and turbo upgrades, mechanical pump or stock VW TDI mechanical pump with the electronic throttle and dynamic timing control. They are the same base pump, mTDI & eTDI, the Bosch VE rotary injection pump. Its the Pumpe Deuse 2004+ engines that are all computer controlled, no chance of running all mechanical. More power, more reliability issues to address with upgrades however.