I want to get a PCM for my next item on the list, but all of them require (91+) octane. I don't want to always cruise around with 91+. Around me it's, 88, 89 or 90 i think. Anyways, I usually go for the 89 but gas nowadays has me going to 88. Is their a PCM out there that doesn't require 91+? I would like to have them tune it so it makes more power on 89 instead of 91 plus. Can anyone help?