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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Race fuel and tune?
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<blockquote data-quote="Voltwings" data-source="post: 14582856" data-attributes="member: 155561"><p>Depends on the timing threshold your tune allows. If the higher octane allows the computer to add timing (and assuming your tune was not already adding the maximum timing it was allowed) there could be a performance benefit. Also depends in what situation you're using the gas, the benefits of race gas go beyond the fact that it simply combusts and makes power, such as race gases improved ability to perform on a road course. </p><p>I've cut my 93 road race tune with 50/50 98 on occasion and fuel trims always seem to check out ... Unless the fuel is highly oxygenated, i dont see how "gas," could have different stoich simply based on its octane rating. Especially enough to matter when its done in a blend (obviously the degree of the blend matters). Isnt the Specific Gravity of most "race Fuels" higher as well? I'd expect that to make you run richer if anything.</p></blockquote><p></p>
[QUOTE="Voltwings, post: 14582856, member: 155561"] Depends on the timing threshold your tune allows. If the higher octane allows the computer to add timing (and assuming your tune was not already adding the maximum timing it was allowed) there could be a performance benefit. Also depends in what situation you're using the gas, the benefits of race gas go beyond the fact that it simply combusts and makes power, such as race gases improved ability to perform on a road course. I've cut my 93 road race tune with 50/50 98 on occasion and fuel trims always seem to check out ... Unless the fuel is highly oxygenated, i dont see how "gas," could have different stoich simply based on its octane rating. Especially enough to matter when its done in a blend (obviously the degree of the blend matters). Isnt the Specific Gravity of most "race Fuels" higher as well? I'd expect that to make you run richer if anything. [/QUOTE]
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Engine/Tuning
Race fuel and tune?
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