01-11-2010, 08:08 PM
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CC Member
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Join Date: Feb 2006
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance, Roush 427R-095, Pro Systems carb, 2" headers, Buckshot Racefab side pipes, 10s off idle start
Posts: 705
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Not Ranked
They put all sorts of stuff in the gas in Scottsdale, AZ. The worst thing is they only go up to 91 octane. The Roush 427R shouldn't be subjected to that fuel in my opinion. I ran unleaded 100 octane much of the time, but mixed down to 97 or so with pump gas at times.
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