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2011-2014 Mustangs
Engine/Tuning
Vp ms109
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<blockquote data-quote="twistedneck" data-source="post: 14899531" data-attributes="member: 130159"><p>Some more stoich's and different fuels.</p><p></p><p>Pure Gasoline 14.7:1 - very hard to find and not good for new turbo cars</p><p>E10 14.1:1 - typical premium</p><p>E70 10.7:1 - winter E85 in northern states</p><p>E85 9.8:1 - std. E85 during summer</p><p>E98 9.1:1 - my favorite fuel</p><p>Methanol 6.4:1</p><p>Nitromethane 1.7:1</p><p></p><p>See a trend? the faster cars show up lower on this list. Why? because the lower you go on the list the more oxygen the fuel carries inside of it, the harder it is to ignite, and the more compressible the fuel becomes. Gasoline does not contain oxygen but many exotic gasoline fuels like FTW are oxygenated in the lab so they cheat. </p><p></p><p>A dragster can run so much fuel that it actually fills the combustion chamber completely. This would normally destroy the engine and bend the rod and fracture the piston and block. However, since there is so much oxygen and compressibility in the Nitro it does not crack the block, it can easily burn with just its internal oxygen supply, and it will not pre-detonate since its very hard to light in the first place, give me two spark plugs please!</p><p></p><p>so back to the OP, yea you ran lean but the car will account for that adding fuel as needed to make sure measured lambda in the exhaust is 0.83 or what ever your setting was, as long as your fuel trims did not show adding more than 15% (1.15) you wont even see an engine light. Other way around every time you put in 100% gasoline from some mom and pop station you are then too rich and the car must take away fuel.</p><p></p><p>Go E85 man! the built in cleaning of internal parts like valves, ports, and combustion chambers alone is worth it.</p></blockquote><p></p>
[QUOTE="twistedneck, post: 14899531, member: 130159"] Some more stoich's and different fuels. Pure Gasoline 14.7:1 - very hard to find and not good for new turbo cars E10 14.1:1 - typical premium E70 10.7:1 - winter E85 in northern states E85 9.8:1 - std. E85 during summer E98 9.1:1 - my favorite fuel Methanol 6.4:1 Nitromethane 1.7:1 See a trend? the faster cars show up lower on this list. Why? because the lower you go on the list the more oxygen the fuel carries inside of it, the harder it is to ignite, and the more compressible the fuel becomes. Gasoline does not contain oxygen but many exotic gasoline fuels like FTW are oxygenated in the lab so they cheat. A dragster can run so much fuel that it actually fills the combustion chamber completely. This would normally destroy the engine and bend the rod and fracture the piston and block. However, since there is so much oxygen and compressibility in the Nitro it does not crack the block, it can easily burn with just its internal oxygen supply, and it will not pre-detonate since its very hard to light in the first place, give me two spark plugs please! so back to the OP, yea you ran lean but the car will account for that adding fuel as needed to make sure measured lambda in the exhaust is 0.83 or what ever your setting was, as long as your fuel trims did not show adding more than 15% (1.15) you wont even see an engine light. Other way around every time you put in 100% gasoline from some mom and pop station you are then too rich and the car must take away fuel. Go E85 man! the built in cleaning of internal parts like valves, ports, and combustion chambers alone is worth it. [/QUOTE]
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