IPR voltage - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 23 (permalink) Old 10-17-2014, 01:49 PM Thread Starter
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IPR voltage

Can anyone tell me what the Percentages/ voltage is supposed to be of the ICP, IPR,. trying to diagnose a lack of power at WOT. But operates great at 3/4 throttle.
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post #2 of 23 (permalink) Old 10-24-2014, 03:40 PM
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Re: IPR voltage

I had the same problem, I cleaned the turbo and that fixed it. I had a terrible stutter at 3000 RPM. Now it's responsive as all get out.
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post #3 of 23 (permalink) Old 10-24-2014, 09:52 PM
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Re: IPR voltage

Have you done the Blue spring upgrade? Could be a lack of fuel pressure to begin with. I finished my upgrades yesterday and can't belive the difference they made.
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post #4 of 23 (permalink) Old 11-09-2014, 05:17 PM
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Re: IPR voltage

Quote:
Originally Posted by Milla View Post
Can anyone tell me what the Percentages/ voltage is supposed to be of the ICP, IPR,. trying to diagnose a lack of power at WOT. But operates great at 3/4 throttle.
My ICP is at 5.2 volts IPR at 85%
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post #5 of 23 (permalink) Old 11-09-2014, 07:19 PM
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Re: IPR voltage

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Originally Posted by Cynicalmike View Post
My ICP is at 5.2 volts IPR at 85%
85% :0
Seems a bit high to me lol

03 f250 six.0
4" turbo back straight pipe,Banks triple disc converter, blue spring mod, 6.4 banjo , MTW Stage 2, Warren 155cc, sct tuner with vivian's looney tune

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post #6 of 23 (permalink) Old 11-10-2014, 01:45 AM
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Re: IPR voltage

Ill double check tomorrow but i could be wrong.
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post #7 of 23 (permalink) Old 02-26-2015, 07:00 AM
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Re: IPR voltage

That was at WOT. Once shes warm its between 20-25%
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post #8 of 23 (permalink) Old 02-26-2015, 04:07 PM
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Re: IPR voltage

85% IRP at WOT is fine. And 5.2v ICP at WOT is great!

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post #9 of 23 (permalink) Old 02-26-2015, 08:09 PM
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Re: IPR voltage

5.2v ICP at WOT is either wrong... or something is not right. Unless you have an upgraded HPOP. Most see 4.6-4.8v


I used to run a twin hpop kit and at WOT I could hit 5.1v... but it would surge any time I got above 4.9v. Not enough to see on a monitor but I could datalog it and hear it on the dyno. ICP was getting too high and caused a harmonic surge in my HPO system. It made the truck lose about 150hp.

Basically HPO/ICP would hit 5.1v drop to 3.5v and back up to 5.1v... up and down so fast that I could not see it on a monitor.


My solution was to pull back IPR duty cycle to max out around 75% and max ICP of 4.8
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post #10 of 23 (permalink) Old 02-26-2015, 08:21 PM
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Re: IPR voltage

Here is some quick data to check... at WOT on a race tune... healthy truck


Injector pulse width should be around 2.0-2.4ms
ICPv should be around 4.4-4.8v
IPR should be around 75-85%
Boost should be around 25-30
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