Couple things:
- Consider a new SIG (I get the message, it's not coming out right)
- If you have a tune & you NEED to fill up, take it off or put it on it's lowest setting
- AVOID at all cost running straight 87. Even if you can get your hands on 91, that'll be significantly better than 87
- Try to buy some Octane Booster (AutoZone) to keep your gas as close to 93 as possible
Otherwise, just try to avoid driving your car. Luckily the powers starting to come back in a lot of places so getting gas might be getting back to normal over the weekend/next few days.