I am heading to Island today to make a couple hits with the 100 octane tune from Matt.. I ran the car to 20 miles to empty and put 10 gallons Sunoco 260.. Will see how it compares to the E30 tune.. One thing nice about E30 you don't have to spend 10 bucks a gallon.. I think I'm probably chasing my tail but I have nothing better to do today..