The FAST/BS3 is much easier to tune then an AEM plus you have a lot of good FAST tuners in the area such as petty,brad brand etc....AEM is still kind of new and from what i've read they are still working out some bugs on the mustang software but for a street car its the best system out there imo. I think though for Davids setup AEM is a bit overkill.

Jeff does great work but if he hasn't tuned an AEM system before on a mustang i really wouldn't want my motor to be his guinea pig so i agree with what David is saying.

I know one of the best tuners of AEMs for mustangs is out in Arizona,,Steve cole with Mental addiction motorsports. He had a turbo sn95 making over 1000 rwhp with an AEM and has done a bunch of cars. It kind of sucks though around here there isn't as much experience with the AEM on anything else but imports.