boost at 65 mph

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May 30, 2009 | 12:07 AM

frankat1

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boost at 65 mph

what boost dose your truck run at 65 mph on level ground Im running about 7psi and reading some trucks running 0 psi at 70 mph can that be right?

May 30, 2009 | 08:19 AM

Maxium4x4

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From: Ohio

The boost is always going to vary from situation to situation, you should see boost as you stated and 0 when the State Patrol is doing a turn around on you.

May 30, 2009 | 09:35 AM

Dustball8504

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From: Everett, PA

Quote:

Originally Posted by Maxium4x4

The boost is always going to vary from situation to situation, you should see boost as you stated and 0 when the State Patrol is doing a turn around on you.

so very true! lol.

May 30, 2009 | 12:16 PM

mhoefer

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From: BC Canada

And, to get the patrol to turn around, just have it pegged at about 28 psi :-)

At steady state 65 mph, on level ground, with the throttle open enough to stay constant at this speed I would say, yeah, around 7 or 8 psi is about right. Assuming a 6.0?

May 30, 2009 | 12:50 PM

Maxium4x4

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From: Ohio

Quote:

Originally Posted by mhoefer

And, to get the patrol to turn around, just have it pegged at about 28 psi :-)

Oh not really, I met him a in blind curve last night and my GPS was reading 74mph, I never looked at the boost though because that was irrelevant at the time. I got a friendly warning, I actually think I surprised him and he didn't get a good lock on my speed.

Now kids, don't try this at home.

May 30, 2009 | 03:25 PM

foul1

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If it was me the trooper would have busted out an orange barrel from the trunk of his cuser to double my fine.

May 30, 2009 | 05:13 PM

Nitrous

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From: Stevens County, WA

Quote:

Originally Posted by frankat1

what boost dose your truck run at 65 mph on level ground Im running about 7psi and reading some trucks running 0 psi at 70 mph can that be right?

Mine runs between 2-8 psi under the conditions you are describing accounting for wind and other variables.

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Jun 1, 2009 | 09:14 PM

frankat1

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If you have connections the police wont mess with you. Im thinking about going with 4.30 instead of the 3.73 with my 37" tires. Trying to run less boost at crusing speed to get better mpg. Plus better take off and pulling power.

Jun 2, 2009 | 11:29 AM

#10

leviticus

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From: Morro Bay, California

I have a 05 F450 with 4.30's and am running about 7-9 psi at 65-70 mph. Gears won't change much as far as boost goes, but they will make your tranny a lot happier!

Good luck

Jun 2, 2009 | 12:40 PM

#11

cartmanea

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Joined: Jun 2007

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From: Corvallis, OR

Stock tuning I get 7-8 psi, Spartan's Mild Street Economy I get 6-7 psi, and with their Hybrid Race tune I get about 2 psi. The HR tune has more advance timing and some other tricks to get more out of the fuel with less air. It gets me much better mileage too.