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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
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<blockquote data-quote="AvoidTheBoyd" data-source="post: 1124930" data-attributes="member: 22045"><p>Boost is not compression. A turbo increases the density of the air mixture and does increase cylinder pressure, but that is not compression. The compression ratio is mechanically set with the engine design. You would need to change piston or head dimensions to change compression ratio. I agree with the towing scenario and the efficiency comments. The point is however, if an engine does not have pre-detonation with 87 octane, you can't gain power or mileage by going to 93. Like i said earlier, I'm a bit skeptical if Ford actually tuned for 87 or if they tuned for something slightly higher and are relying on the knock sensor. </p><p></p><p>Sent from my Nexus 6 using Tapatalk</p></blockquote><p></p>
[QUOTE="AvoidTheBoyd, post: 1124930, member: 22045"] Boost is not compression. A turbo increases the density of the air mixture and does increase cylinder pressure, but that is not compression. The compression ratio is mechanically set with the engine design. You would need to change piston or head dimensions to change compression ratio. I agree with the towing scenario and the efficiency comments. The point is however, if an engine does not have pre-detonation with 87 octane, you can't gain power or mileage by going to 93. Like i said earlier, I'm a bit skeptical if Ford actually tuned for 87 or if they tuned for something slightly higher and are relying on the knock sensor. Sent from my Nexus 6 using Tapatalk [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
What gas are you using?
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