Loosing Boost PSI???? - Ford Powerstroke Diesel Forum
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Old 01-01-2010, 10:22 PM
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Loosing Boost PSI????

Hey everyone, I have a 2000 F-250, i have 238cc single shot hybrid injectors, GTP-38R non-wastegated, air dog 150 fuel pump, high pressure cross over line, intake, exhaust, and TS chip. I just today installed a Stealth Stage 1 hpop and a regulated return fuel system w/ fuel bowl delete from ITP diesel. I was previously running 44 PSI max and since i upgraded the hpop and added the reg. return, i lost about 5 psi.... And the truck just doesnt seem to pull as hard as it did before... Not a clue whats goin on, also what is the max psi i can set the fuel pressure regulator at??? ANY HELP WILL BE AWESOME!!!!!!!! Thanks!!
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Old 01-01-2010, 11:17 PM
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I dunno what "max" return pressure should be set to, but 70 should be a good pressure for 238's, what nozzle do you have on 'em?

What did you set it too? If it's set to low, you might just be starvin for fuel. Not fuelin hard will keep you from hittin the boost you were.
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Old 01-02-2010, 07:21 AM
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I dont know what nozzles i have on them, they were from Beans Diesel, but anyway i was running 60 psi, but maybe i'll try bumping it up a little and going for another round. I'll let you know how i make out, Thanks
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Old 01-02-2010, 07:21 AM
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and thats 60 psi of fuel pressure, not boost!
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Old 01-02-2010, 10:18 PM
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I bumped up the fuel pressure to 65 psi and it still didnt seem to make much of a difference? Do you think i should take it up to 70 psi? but how much restriction will the fuel pump take before it fails???
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Old 01-02-2010, 10:22 PM
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good luck with the problem....all boots stillon tight?
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Old 01-02-2010, 10:28 PM
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Yes all boots were de-oiled and wiped down and clamps tight. Im really stumped here :/ Any idea on the fuel pressure recomendation?
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Old 01-03-2010, 04:11 PM
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i have a question not trying to rag on you or anything, but with all of the stuff you have done to your truck why do you just have a TS chip? or does it have custom tunes.
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Old 01-03-2010, 05:35 PM
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Quote:
Originally Posted by NRHX2002 View Post
I bumped up the fuel pressure to 65 psi and it still didnt seem to make much of a difference? Do you think i should take it up to 70 psi? but how much restriction will the fuel pump take before it fails???
70 PSI is less restriction on the pump than 65. The PSI readin is on the return, so everything over is goin back to the tank. Set at 70, the injectors have more fuel availible. 238's are thirsty.

And if you're still running a generic TS chip, you're not gettin the full potential from those injectors.
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Old 01-03-2010, 05:42 PM
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Send a message via AIM to dereku
Agreed^^^^^
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