Looking at purchasing Versatune, I already have a Vgate vLinker FS I've been using with ForScan. I'd like to retain the ability to use 87 octane fuel as I'm in Canada, and gas is like $5.43 usd a gallon for just 87, and $6.80 for the specified 91 octane on the premade tunes posted. I'm running: HA-S...