I have an 05 AT. Do I need a different Cobb than one for a MT. May be a dumb question but I don't know **** about this subject

 

The accessport itself is the same it's the tuning map's that make the difference. You need one from MazdaManiac to get it for AT here's the link...
http://www.mazdamaniac.com/cobb/accessport.htm

 

the AccessPORT is just the interface that flashes the ECU.. You needs the AP maps for an NA AT, just like JT said. They don't have a AT map listed, due to most of the market share of intrested tuners driving MTs.

Thats why we love MM so much. Well maybe not love him, more like tolerate. :-|