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wwest's avatar
wwest
Explorer
Mar 06, 2015

2015 F150 Ecoboost FIXED!

Personally I cannot believe/accept the possibility that the ECU calls for boost while the throttle plate remains partially closed. I have always believed that the Ecoboost's design uniqueness comes from simply using boost as a means of extending the engine power generation once N/A intake flow is exhausted.


On the other hand if we assume that the CAC offers a bit of flow restriction in "high cruise" then the turboes might well be spooled up in order to maintain atmospheric pressure at the CAC outlet.


Plus that would help to explain the condensation issue.


If there is a pressure drop across the CAC during "high cruise", throttle almost, but not fully open, then the formation of condensate while "off-boost" becomes perfectly understandable.


Furthermore I am of the understanding that the 2015 F150 is making use of airflow vanes/shutters to prevent the cooling of CAC crossflow air during cruise mode, or "off boost" mode, whatever.

http://www.f150forum.com/f118/2015-3-5l-ecoboost-intercooler-283309/index5/

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