Boost pressure? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 07-29-2010, 05:01 AM Thread Starter
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Boost pressure?

Are you guys with after market exhaust (anything from a dpf/cat delete-6" downpipe back) seeing a decrease in boost pressure vs stock? At 65 mph im seeing around 9psi on flat straight road.. It would be nice to only be putting out 3-5psi.. I did a search but came up empty handed.. Id like to really see the difference between dpf/cat delete and 4" downpipe back if there is any difference

2010 F250 Lariat FX4 w/Sync.. Everything but nav and sunroof.. Little bit of IDP to help it out
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post #2 of 4 (permalink) Old 07-29-2010, 03:19 PM
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mine doesnt hardly even go above 10 psi even pulling a lot of hills unloaded... flat ground 5 or less running xstreet...

1st murdered out 2011 F250 CC SB Fx4 lariat
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post #3 of 4 (permalink) Old 08-02-2010, 12:29 AM
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I can keep mine under 5 psi on flat ground at 70 mph with the 275 tune. I am sure I can do it on other tunes, but that is the only tune I have monitored it on.

Jeff Dodd - www.SpartanDieselTech.com
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post #4 of 4 (permalink) Old 08-02-2010, 01:17 AM Thread Starter
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Thanks guys.. very good to hear.. Im keeping mine around 9psi runnin 60-65 and gettin 15.8 with a 50/50 mix of city and highway hand calculated.. Id like to bump it on up more

2010 F250 Lariat FX4 w/Sync.. Everything but nav and sunroof.. Little bit of IDP to help it out
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