turbos going under vacuum spartan 150 - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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Old 08-19-2010, 09:32 PM
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turbos going under vacuum spartan 150

okay what in the world does this mean??
My truck wants to drop boost QUICKLY and build boost slowly and when at idle im at -4 lbs!!
clogged exhuast maybe??
its completely stock and has the spartan 150 tune!!
the dpf/cat is coming off sunday, but i dont want to take everything off and have the same problem and put everything back on and send to ford for warranty!!
anybody know whats happening here???
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Old 08-19-2010, 11:41 PM
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no idea..try reloading the tune and see if that fixes it.
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Old 08-20-2010, 10:39 AM
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Bad MAP sensor?
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Old 08-20-2010, 02:17 PM
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almost posotive when you take the dpf off it will go away, dpf tuned truck, not soo good ive been there.
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Old 08-22-2010, 12:56 PM
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yea thats what i figured its when the dpf comes off the truck will finally become reliable!! lol
thx for the all info guys!!
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