Keep the 8 bit, and just Chip this one.. once you toss in a 8 Bit TT MT PROM in it, the ECU behavior will now be of a MT ECU.. you just cant make a MT ECU act like a Auto..
More people tune a 8 Bit than a 16 Bit..
Keep it.. Or sell it to me :) I'm looking for an 8 Bit TT ECU