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Discussion Starter · #1 ·
So ive been switching in and out of my gh tune to see a difference with the stock file and sct 93 canned tune. I do like my gh tune but the vehicle seems very inconsistant with idle rpms. Is there a way to change the in gear idle rpms?
 

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2019 f150 3.5 ecoboost crew cab 4x4 heavy tow package fx4 6.5' bed highly modified
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So ive been switching in and out of my gh tune to see a difference with the stock file and sct 93 canned tune. I do like my gh tune but the vehicle seems very inconsistant with idle rpms. Is there a way to change the in gear idle rpms?
What device are you using?
 

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Discussion Starter · #4 ·
Well with the tunes im getting 580-600 idle speed and it isnt smooth, does the sparke advance affect that?
 

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I have played with idle rpms between 500 and 800 and I have not seen the truck idle any better at a specific rpm. I thought more rpms would be better but it still fluctuates. I think someone already told me I was wrong but my theory was the variable timing being the root cause. I suspected that if the timing was being adjusted the rpms couldn't stay perfectly steady since the timing could change several times during the same firing cycle, if that makes sense. I never have heard an explanation that clear up the ecoboost rough idle, but I will say that adjusting my tune did smooth out my idle significantly.
 

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Discussion Starter · #7 ·
I have played with idle rpms between 500 and 800 and I have not seen the truck idle any better at a specific rpm. I thought more rpms would be better but it still fluctuates. I think someone already told me I was wrong but my theory was the variable timing being the root cause. I suspected that if the timing was being adjusted the rpms couldn't stay perfectly steady since the timing could change several times during the same firing cycle, if that makes sense. I never have heard an explanation that clear up the ecoboost rough idle, but I will say that adjusting my tune did smooth out my idle significantly.
I appricate the response, i did adjust the idle in my tune but its only for when your at idle in park/neutral. How were you able to keep the adjusted idle while it was in gear?
 

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I appricate the response, i did adjust the idle in my tune but its only for when your at idle in park/neutral. How were you able to keep the adjusted idle while it was in gear?
I am in the same boat as you, I can only adjust the rpm while in park/ neutral. The tune adjustment was done by the tuner and I don't think what he did had an impact on the rpms, he changed something though because I mentioned my rough idle and he said he would try and fix it in the next rev, sure enough.
 

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Discussion Starter · #9 ·
I am in the same boat as you, I can only adjust the rpm while in park/ neutral. The tune adjustment was done by the tuner and I don't think what he did had an impact on the rpms, he changed something though because I mentioned my rough idle and he said he would try and fix it in the next rev, sure enough.
Alright sounds good, im waiting till the season and hopefully i can get some new tunes on sale and at that point ill ask about it and see what happens
 

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2022 Powergrid KingRanch in Sparkle White
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While I never really considered the idle on any of my Ecoboost trucks as objectionably rough, you should feel what the idle is like in a Powerboost when it is in battery charge mode!

You can feeeeel the load that the generator is putting against the crankshaft. It's not exactly lumpy, but more gritty like sand got into the drivetrain.

Only feels that way if you are stationery in park or in drive with your foot on the brake.
 

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Discussion Starter · #11 ·
While I never really considered the idle on any of my Ecoboost trucks as objectionably rough, you should feel what the idle is like in a Powerboost when it is in battery charge mode!

You can feeeeel the load that the generator is putting against the crankshaft. It's not exactly lumpy, but more gritty like sand got into the drivetrain.

Only feels that way if you are stationery in park or in drive with your foot on the brake.
What i dont understand is if they have a 650 rpm idle in park why wouldnt they do that instead of 580? A little bit higher rpm isnt going hurt anything is it?
 

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What i dont understand is if they have a 650 rpm idle in park why wouldnt they do that instead of 580? A little bit higher rpm isnt going hurt anything is it?
Actually my idle RPM is 900-1300, depending on if it is in Park or gear. In gear is 900.
 

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You would be amazed at what they are willing to do for a fraction of an mpg better fuel economy/ emmissions rating.These things run way hotter than they really should just so ford can look "greener".
 

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Actually my idle RPM is 900-1300, depending on if it is in Park or gear. In gear is 900.
I am sure that's to handle the extra load required to constantly top off the batteries, in generator mode I saw they run at 1000 rpms, im guessing that's what it takes to produce the juice! Talked to the dealer yesterday, they trucks is out of production sitting in a field somewhere waiting on the last few microchips, excited and mad at the same time
 

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You would be amazed at what they are willing to do for a fraction of an mpg better fuel economy/ emmissions rating.These things run way hotter than they really should just so ford can look "greener".
It's true that modern vehicles run hotter than the vehicles of my youth, but aren't there some arguments FOR running say.... 215F over 180F?
 

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It's true that modern vehicles run hotter than the vehicles of my youth, but aren't there some arguments FOR running say.... 215F over 180F?
Indeed, I brought this up with a buddy that is an engineer for a Nascar team and he says they run at close to 300 degrees so they can squeeze the most out of the fuel. In his world better efficiency leads to less (or quicker) pit stops

On the other hand they don't get to race the same engine twice very often, lol
 
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