I know a few of us had an exchange over this a year or so ago but I had to bring it up again in a different light.

Why can't we use a 2009 E38 in a 2007 E38 application of the same model? All sensors are the same as far as pinouts I believe.

I know the TAC module subject comes up but not sure if thats in the ECM or a seperate module like the LS1 ECM's where.

Maybe Ross can chime in and add some insight on why this can't happen.

Thanks

HT