Decipher data log.
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Decipher data log.
I did some logging with my predator, don't have any gauges yet, but figured i'd look at some of the paramaters.
it's snowy out, and roads were crowded, so i couldn't get on it a ton, but i put it in 4wd and hit it on the back stretch of the dealership.
it's cool out 15 degrees or so.
I did one little wot blast going halfway through second
trans temp was about 110 degrees
inj pressure (i guess this is where the 1211 code comes from?) was 17, i believe mpa?
i did 2 manifold pressures, one was absolute manifold pressure and the other was manifold gauge pressure
during lite throttle driving, the abs mp would stay around the low 100's and the manifold gauge pressure would stay about 10% of that roughly
140kpa/13kpa
at wot, the abs mp went to about 240kpa and the manifold gp went to 140kpa
anyone able to break the info down? to be honest, i'm not sure what i'm looking at on this thing, lol
it's snowy out, and roads were crowded, so i couldn't get on it a ton, but i put it in 4wd and hit it on the back stretch of the dealership.
it's cool out 15 degrees or so.
I did one little wot blast going halfway through second
trans temp was about 110 degrees
inj pressure (i guess this is where the 1211 code comes from?) was 17, i believe mpa?
i did 2 manifold pressures, one was absolute manifold pressure and the other was manifold gauge pressure
during lite throttle driving, the abs mp would stay around the low 100's and the manifold gauge pressure would stay about 10% of that roughly
140kpa/13kpa
at wot, the abs mp went to about 240kpa and the manifold gp went to 140kpa
anyone able to break the info down? to be honest, i'm not sure what i'm looking at on this thing, lol
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I found a kpa to psi conversion
1 Kpa (Kilopascal) = 0.145037738 Psi (Pound Per Square Inch)
So i'm assuming the manifold pressure would be my actual boost.
144 x .145037738= 20.88 psi.
Sound about right for an 85hp tune?
1 Kpa (Kilopascal) = 0.145037738 Psi (Pound Per Square Inch)
So i'm assuming the manifold pressure would be my actual boost.
144 x .145037738= 20.88 psi.
Sound about right for an 85hp tune?
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normal for stock? or a base tune?
I have the rifraff filter mod and 4" exhaust. Not sure how that affects boost if at all.
I have the rifraff filter mod and 4" exhaust. Not sure how that affects boost if at all.
Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
You stated you had the 85hp tune. I assumed you were running it. For a stock turbo, these readings are in the normal range. You could bump the boost up with a couple simple mods, but I'd wait until the gauges are in.
Can you configure the tuner to read "standard" equivalents for the readings?
Can you configure the tuner to read "standard" equivalents for the readings?
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You stated you had the 85hp tune. I assumed you were running it. For a stock turbo, these readings are in the normal range. You could bump the boost up with a couple simple mods, but I'd wait until th gauges are in.
Can you configure the tuner to read "standard" equivalents for the readings?
Can you configure the tuner to read "standard" equivalents for the readings?
I wanted to check mine and make sure I was about where I should be.
As far as switching to psi, i'm researching that now.
Because racetruck
Joined: Apr 2007
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From: Monterey Bay, CA
Without some sort of boost fooler like the Riffrraff OCR, you won't see much over 20-22 psi. Above 21 the PCM starts to defuel
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Without some sort of boost fooler like the Riffrraff OCR, you won't see much over 20-22 psi. Above 21 the PCM starts to defuel
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It depends on if it was manifold gauge pressure or manifold absolute pressure. The MGP is what your MAP sensor is seeing and absolute pressure us your EBPS.
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anything else you recommend besides what duck posted for a base tuned truck?
besides the offroad pipe, lol. I shoulda never went with the muffler, lol
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I would get some gauges and some miles on her and see what you think. Sometimes your initial thoughts change as you get used to how it drives and runs.
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i may still load the 110 tune and try it too...
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Remember that you won't need the OCR until you get over the 23psi mark. No reason to buy it if you don't need it, unless you really want to 
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how much to send me that delete pipe?
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Riffraff Diesel: MBRP 4" Single Muffler Delete Pipe