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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 03-27-2009, 01:10 AM   #1 (permalink)
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high boost

anyone know why my 06 s boost would rise its ran about 2-3 around town normal driving now its 7-9 at free way speed its rose from 11-16 to about 19- 22 any thoughts guru s
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Old 03-27-2009, 10:00 AM   #2 (permalink)
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Your boost fluxuates with engine demand. When the engine is loaded up hard acceleration it shoule be 19-25ish when the engine is crusing and dosent have much load it will be 2-6 mild acc 11-16 etc. By load I don't mean a trailer or weight but the amount of work the engine is doing to acheive the gas pedal imput
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Old 03-27-2009, 08:30 PM   #3 (permalink)
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boost

yeah i no how a diesel works but it seems to be getting more boost than before and egt levels seem to be up also
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Old 03-27-2009, 08:34 PM   #4 (permalink)
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boost

maybe the turbo vanes are stuck open???? egr valve plugged recently added afe filter system removed muffler any suggestions anyone thanks
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Old 03-27-2009, 11:36 PM   #5 (permalink)
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If you reduce back pressure and lower intake restriction then your boost will go up. How sure are you that EGT is up?
Wind, grade, load in truck will all make boost vary. Maybe you are paying more attention since the mods you did.
Blocking egr also contributes to higher boost.
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