When I build up my boost - Ford Powerstroke Diesel Forum
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Old 06-07-2012, 05:41 PM
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When I build up my boost

Ok I have a 2002 ford f350 dually and when I build up boost around 15 to 20 and let off the brake a smash the gas pedal to the floor it cuts off but I can smash the gas pedal to the floor from a dead stop and not build boost it takes off fine any answers
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Old 06-08-2012, 08:29 AM
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Oh and I forgot to mention I am running a dp tunner
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Old 06-12-2012, 12:36 PM
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This could be possible compressor surge. I saw surge at about 20-23 pounds of boost before i changed to the wicked wheel.Also what kind of gauges are you running? IF you have a mechanical boost gauge look at the needle to see if its jumping around. It would be compressor surge if it is.
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Old 06-12-2012, 01:05 PM
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You might also be getting into an overboost part of the tuning and defueling.

If your launching at 20 psi, what are you maxing at? Where is the psi at when it falls flat?
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Old 06-13-2012, 04:58 AM
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I spool up to 20 and I don't know what it goes to because as soon as I take my foot off the brake and press the gas pedal down it try's to cut off if I lift my gas pedal it will stay running but if that I hold it down it will cut off also the gauge doesn't go back and forth when I'm running 70 mph it stays on around 4 pounds
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Old 06-13-2012, 10:06 AM
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well it wouldnt surge at 4 lbs of boost anyways. it surges usually at 20+ pounds.
it could be defueling if you get too much boost like the other guy said.
you could try a boost fooler of some sort. there is a bunch of places that sell them.

oh one more thing. you pulling any codes to see?

Last edited by blue99stroker; 06-13-2012 at 10:07 AM. Reason: change
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Old 06-14-2012, 05:57 PM
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I don't know if I have any codes or not check engine light is not on but do the boost foolers go bad because I have one on it already. Would the check engine light be on I do know that it has come on when I get in it hard but it goes off after a minute or two
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Old 06-14-2012, 07:02 PM
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my light still comes on for the overboost and i have the Driven Diesel "Overboost" Kit
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Old 06-24-2012, 10:15 AM
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Ok had a buddy to hook his scanner up to my truck and I have no codes and had him to install a gauge going to map sensor and set it at 18 psi and still when I build boost and take off it try's to cut off like it runs out of fuel.
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Old 06-28-2012, 05:34 PM
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Well crap thought I had it fixed but I don't put a regulator on it before the map sensor and it's set at 19 psi and also installed a wicked wheel and still doing the same thing.
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