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BMS is where it's at... Dinan doesn't have Nearly the options you have with a jb4 maps gauge hijacking etc. Also jb4 has a ton of built in features that will kick you to another map if you get too much knock or go lean etc etc. 12.0 at 124 is a sorry time for a f10 M5. A lightly modded n55 (3.0 single straight 6) will run that or even better E/T.sounds like you had a terrible 60'... Anyways I wouldn't rag on piggy back tunes there is a lot that a flash doesn't do that makes a piggy safer.... Lots of fail safe modes for fuel pressure timing knock and overboost that a flash tune won't even show or warn you on that can cause more serious issues.
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