hey 247, ive had my MSP for just a little over a month now, and last night i got hit with a bad knock, and i checked this morning and i have 5 CEL codes: p0113, p0171 (x2), p300, and p0660. i have a reason to believe its because the jackass at the gas station put regular instead of premium like i asked.. could this be it?!?!?(huh)