Do 5.4l engines use cylinder deactivation?
Guy here at work says his 2010 F150 5.4 drops to 6 then to 4 to save on fuel.
Is he smoking crack or ?? |
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Not unless you consider Fail safe mode a form of cylinder displacement. Dodge hemi is the only truck I am aware of that makes use of it.
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That's what I was thinking.
He just bought it used over the weekend. 2010 F150 Lariat 4x4 with 48,000 for $27k |
Dodge calls it MDS, Chevy/GM do it too. That's how they get their decent mpg numbers. The new stingray vette is going to be 30mpg highway because of this. IMO, it's cheating and the exhaust sounds like ass.
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I wouldn't think the exhaust note would change much. The non-firing cylinders still inhale and exhale air at the same rate the firing cylinders do.
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Originally Posted by twinskrewd
(Post 5013261)
I wouldn't think the exhaust note would change much. The non-firing cylinders still inhale and exhale air at the same rate the firing cylinders do.
HTH. Doug . |
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