Welcome to the forum @G80Fanatic sorry to hear that you're having issues with your G80. Using the wrong gasoline can lead to problems with the motor because it can lead to pre-ignition in the engine. Have you heard any knocking at all?
I haven't heard of a tune or any tricks that that helps/teaches an engine to use lower grade gasoline. Personally I would go back to using premium fuel and get the engine looked at.
I haven't heard of a tune or any tricks that that helps/teaches an engine to use lower grade gasoline. Personally I would go back to using premium fuel and get the engine looked at.