10psi of boost WOT???? - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 05-21-2013, 12:33 PM Thread Starter
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10psi of boost WOT????

I only make 10lb boost at wide open throttle and only 15psi with edge programmer maxed on my attitude monitor. The truck has always felt a bit of a "dog" but I guess I should start with 99.5 F450 reg cab with workbox 4.88 rear 4X4 DRW short chassis. 9-10mpg avg, but with edge ez module i got 12mpg and that was set to max performance not fuel econ mode. My new edge with attitude monitor (I bought it used from guy) i can see parameters including egt's now but fuel econ didnt change. I neve see black smoke (unburne dfuel) from exhaust until max setting it puffed out a little. This does not seem normal. possible ebpv stuck?
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post #2 of 12 Old 05-21-2013, 12:51 PM
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Check your uppipes, down pipe, up pipe collector, and exhaust manifolds for leaks(soot). If you dont have any exhaust leaks check your CAC boots. The only other things I can think of if none of these fix it is your wastegate actuator might be opening too soon or the EBPV is sticking. Hope that helps!

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post #3 of 12 Old 05-21-2013, 12:52 PM
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10 PSI is WAY low.

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post #4 of 12 Old 05-21-2013, 01:05 PM Thread Starter
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I checked all pipes and boots...no leaks, no soot no nothing all bolts are tight.
I guess a Banks big head is in my near future to see it factory one is malfunctioning.

Last edited by ande6009; 05-21-2013 at 01:05 PM. Reason: Banks misspelled
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post #5 of 12 Old 05-21-2013, 01:36 PM
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doubt its the wastgate, the stock one opens at 8 psi anyways
if you cant find leaks then id say the EBPV valve is sticking shut.

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post #6 of 12 Old 05-21-2013, 02:01 PM Thread Starter
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what should egts be if valve is stuck? would it be stuck open or shut?

2011 CCLB DRW 4X4 bone stock, but not for long
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post #7 of 12 Old 05-21-2013, 03:22 PM
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Quote:
Originally Posted by blue99stroker View Post
doubt its the wastgate, the stock one opens at 8 psi anyways
if you cant find leaks then id say the EBPV valve is sticking shut.
One would think, you'd hear an awful sound coming from the downpipe/exhaust.

OP, i'm in same boat...no soot, leaks..etc anywhere. Even tried a different turbo, with the same results. 10psi wot, 14psi with redline unhooked...

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #8 of 12 Old 05-21-2013, 03:35 PM Thread Starter
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I'll try unhooking redline and see what happens

2011 CCLB DRW 4X4 bone stock, but not for long
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post #9 of 12 Old 05-21-2013, 04:22 PM Thread Starter
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I took it for a small ride adfter unhooking red line, almost 19lbs boost. so I dunno what the deal is.

2011 CCLB DRW 4X4 bone stock, but not for long
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post #10 of 12 Old 05-22-2013, 07:22 AM Thread Starter
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Can someone explain to me what it means if more boost is created when redline is disconnected?

2011 CCLB DRW 4X4 bone stock, but not for long
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