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Originally Posted by G-awesome
Shell 91 with vpower for the air miles that I will never use.
For some strange reason, My OFT tune doesn't like Chevron 94 gas as much as 91 Shell according to my data logs...maybe it's the quality of gas.
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Quote:
Originally Posted by Teseo
Funny thing is mine work well on 93 oct, but non ethanol blend and logs looks pretty good
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I think this is the only accurate way to know the quality of fuel. Data log constantly and know how much ignition advance and knock you typically get during certain ambient temps.