well definately make a bigger plenum if you plan on making an intake manifold. the bigger turbos needs some place for all that extra cfm to go.

one idea is to run an autronic, we have another a4 customer coming with an autronic installed that should work well

 

I'll be running the stock engine management.
We have some great software that allows us to tune the motronic just as we like.
With a better MAF that works just great. We can make both timing, fueling and everything just as we want...

Only problem that I think we might come into are because of the 710cc single stage high impedance injectors.
Would have been nice if the motronic supported low impedance.

I also think the stock inlet is sufficient. Well, somewhat...
I've ported the inlet and fitted a 73mm throttlebody instead of the 60mm stock one...