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Old 06-03-2010, 04:23 AM
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Boost Question?

So I was pulling my 5th wheel the other day and I had the cruise set at about 57. Going up a slight incline the tranny kicked down and when it did my boost gauge burried my gauge (35)! I immediately hit the brake to disengage the cruise and when I did it turbo farted, which is not big deal. Just wondering if anyone else is seeing 35 pounds of boost running stock?
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Old 06-03-2010, 04:59 AM
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yep i've seen that high on stock systems. it all depends on load of the engine. how heavy is your 5th wheel
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Old 06-03-2010, 05:09 AM
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I just posted that...

Truck Scale Question
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Old 06-03-2010, 08:24 AM
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ya, you could see 35 lbs no problem. I have a good friend who is a ford tech that has seen 36psi stock just WOT all depends on the truck he said.
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Old 06-03-2010, 08:36 AM
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Boost pulling 5er

Don't want to steal the thread but i have the same question just a little different. Pulling a 5er 14,000 lb with an 06 all stock what is the max boost, 20-25 in the mountains up some long grades, maybe 30 for a short time, i don't want to over boost and do something to the heads my truck has 24,000 miles on it. Thanks for the help.
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Old 06-03-2010, 08:44 AM
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thats very hard to get 35 psi of boost on all stock even with my truck runnin chip intake exhaust etc...when i nail it or spool it up the most ive gettin is 25-30...then again i have a 7.3 so that may be the difference
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Old 06-03-2010, 08:50 AM
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well pulling at trailor with a small tune i've seen 44 psi of boost, you have to remember boost just doesn't kill the head gaskets its the timing and actual pressure in the cylinder from that such as over advancing from tunes.
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Old 06-03-2010, 09:10 AM
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Quote:
Originally Posted by thenubsterman View Post
well pulling at trailor with a small tune i've seen 44 psi of boost, you have to remember boost just doesn't kill the head gaskets its the timing and actual pressure in the cylinder from that such as over advancing from tunes.
So with mine stock 30 lb of boost is ok just don't want to over boost, even with warranty i don't like shops that means down time and summer is here.
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