13lb of boost max!!! - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 09-08-2013, 09:47 AM Thread Starter
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13lb of boost max!!!

Hey y'all it's me again about to do head studs due to overflow in the degass bottle and egr is already deleted but my issue lately is that the truck will only push about 13lb of boost no matter what I do which tune I use or what I'm pulling, any suggestions or ideas, also was reading about the ccv mod while I had it tore apart for the bulletproofing any suggestions on that and it's already got the 4"turbo back exhaust so where would the back pressure sensor be and why is it not throwing a code on the h&s tuner please help me this truck is about to drive me nuts!!!! And where is the "1/4" line from the intake to the Vogt sensor" I read that someone had bumped one and cracked it and that was the problem any help much appreciated!!
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post #2 of 5 Old 09-08-2013, 09:57 AM
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could be the vanes on turbo are stuck... if you have a monitor right down the vgt% cycle numbers when you first start your truck. a turbo takes couple of hours to remove and then about an hr to clean plenty of videos on youtube. plus a good time to install the updated oil feed and oil drain tubes while your in there for the turbo...

let us know the vgt duty cycle numbers off a monitor and the more knowledgeable guys can help ya more.

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post #3 of 5 Old 09-08-2013, 10:03 AM Thread Starter
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It doesn't give me vgt percent just boost psi but I did put the turbo on about 4k miles ago had some motor work done not to long ago (passenger side oil rail came loose under the valve cover and made terrible noise) so that's why I asked about the 1/4" tube that may be cracked or broken
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post #4 of 5 Old 09-08-2013, 02:43 PM
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Take the 1/4" line off you are talking about, and replace it. Also, with a toothpick or a bobby pin, clean out the nipple that goes into the intake. I bet there is some gunk built up in there.

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post #5 of 5 Old 09-08-2013, 08:40 PM
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Also check the ebp sensor on drivers side exhaust manifold. Its valve cover high and a SS tube with a sensor pressure switch screwed into it. Pull it and blow it out and push a wire through it.
It is what the computer uses to control the vgt settings. If it plugs up it will not give you boost.


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