i got a sct livewire custom tuner, with a free tune from american muscle, and for my fuel i put 91 octane, and i feel completely stupid because i thought that was mid grade for where i live and well its not, theres no such thing as 91 octane where i live. Can i change the tuning myself and call them to know what to do, or is it ok to run 89 or 93 with that tune. Or am i just SOL and gotta order one of two tunes i have left? Help please lol

 

Well from what I understand with an AM tune they lock it(because they are retarded and dont want you messing with there o so awesome tune...not).

you can run 93, i seriously doubt you would even have issues with running 87 on an AM tune for 91. i bet they only add a degree of timing(but I still wouldnt do it lol).

just shoot em an email and tell them to write you a new tune.

 

Yea, i know there tunes aren't great, should i see what they say first and if they say another tune i rather not get their crappy tune. Should i hit up brenspeed for one of theirs?