This discussion comes from a thread discussing boost on an EF. As my post below caught the eye of another AU owner, I've moved it here to avoid hijacking the other thread.

What you say is correct, up to a point. That point is the end of EL production. For the AU Ford changed from a digital separate MAP sensor to an analogue one integrated with the IAT. The MAP signal on AU's on is therefore a voltage nominally between 0 and +5V, though typically between +0.2V and +4.8V.

What this means for AU and later models, is that the ECU can be made to "read boost" by the simple expedient of wiring in an aftermarket 2, 3, or 5-bar analogue MAP sensor in place of the pressure (vacuum) signal from the stock TMAP, and rescaling load-dependent variables to suit, using tuning tools such as Advantage or Sniper.

I realise most of the conventional wisdom relates to the E-series, so this is not of much help in that regard. But it seems to be a little-known fact that the AU differs from the E-series in this critical area. An AU owner reading E-series discussions would form the mistaken impression that to boost his engine, he'd need to fork out for an aftermarket ECU.

nice info could help me alot can you please explain it in a way a dummy like me can understand it im good with engines but not electronics

Matt