Thank you.

Im looking for 91 octane tune, for 2014 Chevy silverado 5.3L flex.

I connected My intune to my laptop Its a Lenovo Thinkpad with Intel.
I am trying to do the auto update and it starts to do it and says not to unplug trying to reboot. and it stays there for 1 hour and does nothing. Clicked auto update again and did same for another hour. got tired of waiting and ...

I went to computor and click cd drive diablosport. then intune.exe it opens up for 5 seconds then redirects me to register unit, but after putting in my info says it has already been registered and it keeps happening, it wont let me use it.

I have a 2014 Chevy silverado 5.3 flex fuel
I run 91 octane but only see 87 octane tunes, also i have long tube headers with y pipe and a diamond eye 3" Catback exhaust.
Can i custome tune myself, I am looking to disable rear o2 sensors, and i have seen on other posts that there is a website to go ...