OK... dumb question... can you add an octane booster to regular 91 octane fuel and get the same result? I can't get anything other than 91 here.
2015 Austin Yellow M4 | Black Full Merino Leather | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT - Sold
2012 C63 Coupe | Performance package | Obsidian Black - Sold
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package - Sold