Thought I'd share with you guys, I just bought the Steeda CAI and SCT X3 Tuner and the guy just called me to clarify what tune I was requesting. The options for tunes were 91 and 93 but I haven't been able to find 93 octane here in Kansas City. He said I should get the 91 tune and gave me a little info on how the different octanes can change the way my car runs. Then he told me I can have 3 different tunes on my tuner so I got a 91 performance, a 91 economy, and a 100 racing tune since there is a station over on the Kansas side that sells 100 octane. The customer service has been above and beyond what I expected and now I just have to wait on the postal service to give me my stuff.:bigthumbsup If only he could have made the gas stations here offer 93 again.