E99 boost questions - Ford Powerstroke Diesel Forum
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post #1 of 23 Old 05-31-2010, 03:04 PM Thread Starter
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E99 boost questions

so the last couple times ive pulled codes on my truck ive gotten a P1247 low boost, and a P1249 wastgate code. i took it to a diesel tech to see whats goin on. he said it was nothing to worry about. so i installed a boost guage the other day and only getting 15psi. then 16psi with the little red line unplugged from wastgate.

i know the early 99s have different turbos etc. but shouldnt i be making at least 18psi?

i heard the EBPV can cause a low boost condition like this so i cleaned the tube and noticed the little diaphram in the sensor was gone. is this the issue? also notice it takes a while to warm up enough to have power. im only getting 13mpg lately too. used to get 17 whats going on?

E99 F250 7.3l CC SB 4x4 Lariat,8.5" lift, dual reservoir shocks toyo my 37's gear alloy 20x12's,TW chip,5in exhaust,DIY intake,BTS trans,HPX, frx gauges,Powerslot rotors w/hawk pads,Tint,08 emblem vents,Custom paint,05 Harley front w/ custom grill, shaved 08 step gate and tinted tails, spray-in bedliner
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post #2 of 23 Old 05-31-2010, 03:07 PM
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stock tuning i was getting about 18 psi of boost, with my DP tuner i get 28 psi on 120 race.

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post #3 of 23 Old 05-31-2010, 03:35 PM Thread Starter
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ok so there is a definate issue with mine only getting 15psi

any ideas?

E99 F250 7.3l CC SB 4x4 Lariat,8.5" lift, dual reservoir shocks toyo my 37's gear alloy 20x12's,TW chip,5in exhaust,DIY intake,BTS trans,HPX, frx gauges,Powerslot rotors w/hawk pads,Tint,08 emblem vents,Custom paint,05 Harley front w/ custom grill, shaved 08 step gate and tinted tails, spray-in bedliner
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post #4 of 23 Old 05-31-2010, 03:59 PM
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i have gotten up to 25 ibs of boost and thrown a overboost code.

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post #5 of 23 Old 05-31-2010, 04:20 PM Thread Starter
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yea but your running a resistor that will give more fuel and increase boost im talkin stock

E99 F250 7.3l CC SB 4x4 Lariat,8.5" lift, dual reservoir shocks toyo my 37's gear alloy 20x12's,TW chip,5in exhaust,DIY intake,BTS trans,HPX, frx gauges,Powerslot rotors w/hawk pads,Tint,08 emblem vents,Custom paint,05 Harley front w/ custom grill, shaved 08 step gate and tinted tails, spray-in bedliner
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post #6 of 23 Old 05-31-2010, 04:41 PM
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stock i hit 21 max.

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post #7 of 23 Old 05-31-2010, 07:49 PM Thread Starter
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ok well i just checked all the IC boots and tightened em all down. throughin a 5.6k resistor and unplugged the wastegate, just to see how much boost i can make

E99 F250 7.3l CC SB 4x4 Lariat,8.5" lift, dual reservoir shocks toyo my 37's gear alloy 20x12's,TW chip,5in exhaust,DIY intake,BTS trans,HPX, frx gauges,Powerslot rotors w/hawk pads,Tint,08 emblem vents,Custom paint,05 Harley front w/ custom grill, shaved 08 step gate and tinted tails, spray-in bedliner
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post #8 of 23 Old 06-01-2010, 01:19 PM
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Check your up pipes for soot, this would indicate exhaust leaks which will do what your truck is doing lately. Also, the EBPV can get stuck. Mine did and I just deleted the damn thing.

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post #9 of 23 Old 06-01-2010, 08:00 PM Thread Starter
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no up pipe leaks that i could see. how exactly did you delete the EBPV? im leaning more towards that because it takes forever to warm up even at 60*

i hit 22psi with the 5.6k resistor and the wastegate unplugged, so maybe it was just the IC boots were loose

E99 F250 7.3l CC SB 4x4 Lariat,8.5" lift, dual reservoir shocks toyo my 37's gear alloy 20x12's,TW chip,5in exhaust,DIY intake,BTS trans,HPX, frx gauges,Powerslot rotors w/hawk pads,Tint,08 emblem vents,Custom paint,05 Harley front w/ custom grill, shaved 08 step gate and tinted tails, spray-in bedliner
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post #10 of 23 Old 06-01-2010, 08:30 PM
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I hit 30-32 psi w/ a fooler on a tune.

Stock w/ just fooler I can hit 23 if I try

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AFE Stage 2
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Straight Pipe'd to 7 inch stack
Edge tuner, soon to be custom tunes

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40x13.50 Geolander M/T's
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