I tried this on my 1LE that I imported into New Zealand. I was unsure what fuel was in the tank so I drove the tank dry and filled with 98 Octane. This fuel is readily available over here and is only a few cents more. After the fuse pull I took the car for a ride, after it warmed up I launched a few times and to my surprise I could feel it pull harder. I wondered if it was just a placebo effect but suddenly on one of my launches the car fish tailed and traction control kicked in...... The fuel pull works, not sure about long term but for the moment running 98 octane it's a different car
