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5th gen tuning question

5853 Views 12 Replies 4 Participants Last post by  5.9 Bro, 
Quarter_Toy_2019_Ram
Hey you’ll, I’m new to the group and I’m wondering if I could get some help regarding my truck. I have a 2019 Ram 2500 6.7 Cummins, tuned and deleted, with a S&S Super Sport CP3 conversion backed by a FASS 165. I got it tuned before I did the CP3 swap, and S&S says that IP needs a tune. Of course I ask the tuner for a revision and they say
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it doesn’t need one. Don’t get me wrong the truck is drivable and runs, but I feel that there’s something off. I’ve attached a picture of one of my data logs. If anyone has info about how it looks it maybe it should look different please let me know. It was taken on my 75hp tune downshift to 3rd taken to redline, shifted to 4th to redline. Does it look normal? Rectangle Slope Line Plot Parallel
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elephantrider
did you take your foot off the go pedal @ :10?
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Quarter_Toy_2019_Ram
elephantrider said:
did you take your foot off the go pedal @ :10?
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Yes because I looked down and was sitting on redline, then it shifted and I was back on it again.
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elephantrider
boost matches fp for the most part. you'd want to look for fp drop off while tps does not.

what "seems" off? the snipit you show doesn't look irregular.
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Quarter_Toy_2019_Ram
I don’t like the FP drop at the beginning makes the truck feel sluggish at first. Then I thought that the boost should hold longer. I know it’s a turbo but it doesn’t seem to kick in as soon as I thought it should.
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Quarter_Toy_2019_Ram
elephantrider said:
boost matches fp for the most part. you'd want to look for fp drop off while tps does not.

what "seems" off? the snipit you show doesn't look irregular.
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So is it normal for the fuel pressure to drop off like that at the beginning? I’ve seen a few others where they stay up and climb instead of drop like mine does. So you think it could be tune related?
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elephantrider
if those graphs were smooth, fp and psi would be close. I'd think it's more of a drive ability polishing that's needed.
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Quarter_Toy_2019_Ram
elephantrider said:
if those graphs were smooth, fp and psi would be close. I'd think it's more of a drive ability polishing that's needed.
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So smoothing out and refining the tune instead of saying it’s good because they don’t want to fine tune it. Because you said the same thing, everything looks on par but could be improved if they truly wanted
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elephantrider
exactly. and that's what you pay a tuner to do. finding a tuner worth a crap is a futile effort these days. that's across engine platforms.
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Andy2500
Are you talking about the dip at the 7 second mark? When you hit the downshift to 3rd. What you might be feeling could be torque management or even some traction control kicking in pulling fueling.

Looks pretty normal to me, it ramped up good with the throttle at the beginning. I'd like to see your VGT position through that pull to see what it was doing.

These trucks will make more felt power at lower boost levels when the tuner makes changes with a more open turbo mapping.
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Quarter_Toy_2019_Ram
Andy2500 said:
Are you talking about the dip at the 7 second mark? When you hit the downshift to 3rd. What you might be feeling could be torque management or even some traction control kicking in pulling fueling.

Looks pretty normal to me, it ramped up good with the throttle at the beginning. I'd like to see your VGT position through that pull to see what it was doing.

These trucks will make more felt power at lower boost levels when the tuner makes changes with a more open turbo mapping.
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How do I get you the VGT throughout the entire run?
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Quarter_Toy_2019_Ram
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Andy2500 said:
Are you talking about the dip at the 7 second mark? When you hit the downshift to 3rd. What you might be feeling could be torque management or even some traction control kicking in pulling fueling.

Looks pretty normal to me, it ramped up good with the throttle at the beginning. I'd like to see your VGT position through that pull to see what it was doing.

These trucks will make more felt power at lower boost levels when the tuner makes changes with a more open turbo mapping.
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Here is another pull with the same dip. I can see it on every single pull I do. As I stated in my original comment. I have a Super Sport CP3 conversion from S&S, which flows different than the stock CP4 or even the NOTune CP3. See the graph from S&S and another test run.
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5.9 Bro
Seems good to me, post a link to the full log
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