Where's boost released - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 02-22-2019, 10:49 PM Thread Starter
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Where's boost released

I have a f250 with alot of performance mods. The turbo is a non vgt. There's no waste gate or bov to be found. When I spool it up and release throttle, I can hear what sounds like the typical bov sound but can't figure out where it's coming from. The reason for searching is it will not build over 28psi. When it gets to 28psi I can hear it releasing the excess pressure so something has to be adjusted to only go up to 28psi. Any suggestions?
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post #2 of 8 (permalink) Old 02-22-2019, 10:55 PM
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Re: Where's boost released

Sometimes the EGR system will act like a blow-off. Assuming you no longer have an EGR system, then with a non-VGT turbo you don't have any "boost release", unless one has been added.

Mark
06 F250 CC SB FX4 Lariat;ARPs OEM gaskets;Banks exhaust;DynaTrac Balljoints;RACCCV6000;Updated HPOP fitting;JimmiJammers;Ravelco;plugs&standpipes;Fumo to;Harpooned;Quadzilla XZT Fuel Press;Blue spring;DashDAQ;PHP_FICM; RiffRaff boots;DCPower270A XP;Inverter;Rancho7000's;BPD EGR cooler;BPD WaterPump;SCT Matts SRL+;ELC Ultra w/ filter;SynchroMax
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post #3 of 8 (permalink) Old 02-22-2019, 11:27 PM
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Re: Where's boost released

..

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post #4 of 8 (permalink) Old 02-23-2019, 01:12 AM Thread Starter
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The egr has been deleted. I've checked the intake side and the down pipe and couldn't find anything.
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post #5 of 8 (permalink) Old 02-23-2019, 01:31 AM
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Re: Where's boost released

Who put the non-vgt turbo on it (and why)?

And, do you know if the custom tuning was implemented to properly control a non vgt turbo?

Mark
06 F250 CC SB FX4 Lariat;ARPs OEM gaskets;Banks exhaust;DynaTrac Balljoints;RACCCV6000;Updated HPOP fitting;JimmiJammers;Ravelco;plugs&standpipes;Fumo to;Harpooned;Quadzilla XZT Fuel Press;Blue spring;DashDAQ;PHP_FICM; RiffRaff boots;DCPower270A XP;Inverter;Rancho7000's;BPD EGR cooler;BPD WaterPump;SCT Matts SRL+;ELC Ultra w/ filter;SynchroMax
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post #6 of 8 (permalink) Old 02-23-2019, 01:35 AM
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Re: Where's boost released

Maybe you're hearing the chocking. I'd bet that's what it is.

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post #7 of 8 (permalink) Old 02-23-2019, 01:37 AM
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Re: Where's boost released

I agree, it's not a great idea to build a boosted setup with no way to control it. Not as critical on a diesel, true. But still a bad idea.

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post #8 of 8 (permalink) Old 02-23-2019, 01:53 PM Thread Starter
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Turbo was on it when I got it. Idk on the tune but it's a dyno tune. It still throws a p0046 code.
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