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6.7L Power Stroke Diesel 2011-current Ford Powerstroke 6.7 L turbo diesel engine
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max egt's?

 
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Old 03-24-2017, 06:23 AM
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Originally Posted by BOHAWG175 View Post
If the Turbo is not forcing air into the engine the engine is sucking air which causes a vaccuum. A negative reading on a boost gauge is basically telling you how much vaccuum your engine is pulling. Mine does it as well.
That's not true. Boost is typically calculated by the computer taking differences in the barometric sensor, MAP sensor and EBP sensor. If you show negative boost it just means you have a guage reading off a bit. Baro should read 14.7 psi and at idle and the map sensor (and if it has an EBP sensor) should read close to the same. Differences in altitude do affect the readings so it could have to do with your height above sea level as well. Either way, something is a bit off.
 
 
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