H&S new update! - Ford Powerstroke Diesel Forum
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post #1 of 22 Old 03-07-2013, 07:09 AM Thread Starter
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H&S new update!

I just updated mine for the first time since I got it about a year ago and WOW.
I like how it builds more boost while your cruising to keep the egts lower. Places where it would normally climb to 900 or soo it won't even get above 750. Just a little cautious of it building 25+ psi of boost while cruising at 70.
Just makin sure this is normal. I knew there was a thread about it somewhere but can't find it.


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post #2 of 22 Old 03-07-2013, 07:17 AM
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High boost???


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post #3 of 22 Old 03-07-2013, 08:19 AM Thread Starter
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H&S new update!

Much appreciated!


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post #4 of 22 Old 03-07-2013, 08:22 AM Thread Starter
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H&S new update!

And if I set my max boost at 35 psi then it should depower at 35 psi regardless of what the dash is reading correct?


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post #5 of 22 Old 03-07-2013, 09:09 AM
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this is the basis of a question I'm asking in another thread..

but, yes.. your defuel setting will do just that when whatever condition is reached.. I am defueling at 32psi right now, because i really don't need the power north of there, and the PCM would have to allow a metric butt load of fuel to be delivered enough to put anything in danger due to cylinder pressure.. hence, protect the head gaskets and/or piston faces..
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post #6 of 22 Old 03-07-2013, 10:21 AM
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why not just run a lower power level if you're going to limit boost like that? It's the same timing and LBF tables on all power levels, and as soon as you stab it, it's going to defuel, so why not just run a lower power level?

curious is all
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post #7 of 22 Old 03-07-2013, 10:24 AM
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highway economy.. it's been my observation after many tanks of fuel, I get the best economy running the HD @ street performance... (was wild)..
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post #8 of 22 Old 03-07-2013, 02:51 PM Thread Starter
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H&S new update!

I still just run it on stock. Mainly because I really don't want any problems and now I'll prolly set my max boost at 32. I take any precautions I can and I drive like my grandpa.


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post #9 of 22 Old 03-07-2013, 05:12 PM
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I have been daily driving the no power setting and after the snow the other day I have come to conclusion that its still touchy. How does defuel work, I thought if you set defuels, when it defueled it just drops it to the lower power level or does it do more?

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post #10 of 22 Old 03-07-2013, 05:58 PM
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My understanding is that it literally de fuels.. as in, stops injecting at the 'tuned' level, and injects much smaller wads of diesel found in the 'stock' table.. I could be wrong, and hopefully someone will set me straight if I am, but I've got comments from other forums to support this..
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