I've seen those favorably running 91 octane and those who have stuck with 87. I'm the middle-of-the-road guy who's running 89 and have seen welcomed improvement. Is this the best of boths worlds? Better performance and still reasonable cost?
2012 Silver Ingot Titanium Hatchback
Premium Package, Sport Handling Package 18" wheels
MFT w/Navigation, Parking Assist, Rain-sensing wipers, leather seats