MTM I believe and would love to be corrected as I don't want to spread mis information..

MTM is MTM from Europe. MTM starts off as MTM tuned software. Now the part I am not sure of is whether MTM themselves tunes the chip for US lower octane fuels or does Joe Hoppen or someone else at his shop tune it (I don't think they do, I think MTM does)..

AMS gets Audi code , AOA from a brothers sisters cousins milkboys girlfriends fatherinlaws sister. Then takes AOA code and tweaks it. From everything I heard. I don't know what the deal is with ABT Europe, but I think it's more a franchise fee..

That is how I see the difference, if someone knows exactly how MTM operates in North America please share.

I'll take any corrections

Tory