Originally Posted by JDBishopArts
My recommendation is get Kevin @ Dunn Tuned to tune it. haha
My Dad was an petrol engineer for Exxon. While yes, most of the petroleum comes from the same place, the refining process and additives each gas producer adds are much different.
Most tuners prefer Exxon/Mobil, BP and QT gas. A lot of people having tuning problems were using Shell gas.
I learned a lot of this because when I went to tune my old Cobra at Gearheads I had filled up with Shell and it was pinging really bad. Luckily there wasn't a ton of fuel in there. We drained it and I filled up with QT and there was no problems.
Ford even recommended BP gas for years. I think they still do.
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But then how can Shell produce a inferior consumer gas but make one of the best race gases in the industry (URT)?
I've tried a few tanks of QT in my car, and the last one I did gave me horrible mileage, so I didn't go back. That could've been a number of factors, but who knows.
The guys at JPC have been great working with me, so that's why I'm giving them my business. I'm hopefully going to have Kevin tune it when I convert to corn, but I'll stick with them for now.
I'll try another gas next go around this weekend when I head down to Austin for a JDRF walk.
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