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check my 4l80 tune please

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Old Sep 12, 2019 | 08:12 PM
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Default check my 4l80 tune please

Need some eyes on what I have set up, got no joy over in the Drivetrain section. 2003 Silverado SS swapped FLT level whatever with PI converter. Buddy did the segment swap before I got HP tuners, and he struggled. I had to replace my PCM a while back and the OS is weird, plus he didn't pull over the diagnostics part of the segment swap initially. It drove but converter would not lock and had some codes. Had him redo the segment swap with the trans diags and poof got lock up and no codes. I decided to get HP tuners to finish setting up everything myself, and an excuse to finally learn some tuning. Drives well and locks as commanded after using Bluecat's program to generate shift points. Would get up to 170 degrees if I drove in D3 and got in it a little, would hover around 150 if I cruised in D4. Seemed to bog on 2-1 kickdown under power. So I looked under the truck...

I found a small dent in the pan from install, and Chuck from FLT suggested swapping a new pan and replacing the filter due to the location of the dent. Filter was intact and found some black junk in the pan and on the magnet with red fluid otherwise. Chuck suggested to drive it and see how it goes. Drove another 400 miles (only about 2000 miles total) and checked the pan, less junk but still some there. Had a couple days recently where the converter would randomly unlock while cruising at highway speed, and then lock again a few seconds later. Made a couple logs, but that issue did not recur. Weird.

Anyway, I'm hoping to get someone to double check there isn't anything I stupidly overlooked with my novice tuning skills. I suspect it might have get pulled and gone over eventually.


Thanks,

Nate

(PS I know not to pay much attention to the calculated HP within HPtuners while logging, just playing around to see if I could get it to work.)
Attached Files
File Type: hpt
2003SSScurrentinjXLSVEMAF.hpt (260.4 KB, 66 views)
File Type: hpl
transdrive1.hpl (951.4 KB, 67 views)
File Type: hpl
transdrive2.hpl (1.05 MB, 41 views)
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Old Sep 13, 2019 | 09:16 PM
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I can't open your tune.

The popup says " Unable to open file. Unsupported or newer version detected. Please update your software"

I don't know what that means.
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Old Sep 13, 2019 | 09:30 PM
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Originally Posted by MikeGyver
I can't open your tune.

The popup says " Unable to open file. Unsupported or newer version detected. Please update your software"

I don't know what that means.
You need to update the HPT software lol,
I did mine last week, was on the last beta and had gotten the same message as you Mike.

I was able to open the files but I can't offer any insight as I'm also in the learning mode. If you punched in the correct parameters in the Bluecat software I'd think you'd be good to go, or at least really close... that Bluecat is the cats meow

E.T.A: I used all the parameters from the Bluecat software except for the TCC lock up. My tuner had my converter only locking up in 4th gear whereas the Bluecat had it locking up in 3rd too... I kept my tuners TCC settings.

check my 4l80 tune please-ytzlur0.jpg

Last edited by RedXray; Sep 13, 2019 at 09:43 PM. Reason: added photo
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Old Sep 13, 2019 | 09:31 PM
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Originally Posted by MikeGyver
I can't open your tune.

The popup says " Unable to open file. Unsupported or newer version detected. Please update your software"

I don't know what that means.
you probably need to update your HPT software to a newer version to read it
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Old Sep 14, 2019 | 08:23 AM
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My thoughts:

1. Check your full throttle shift rpm's. They're different.
2. Shift pressures---General: Set 90 from 300 - 640.
3. Shift General---Force Motor Current: Set the last table to 0. As it's set now, at 100% throttle, that value causes pressures to bleed off = bad. (you can experiment here if you want. Lesser values increase the the shift firmness but only remove very little at a time.)
4. Shift Timing--Desired Shift Time: Set all tables to 0. No reason to run anything other than 0 on a built trans.
5. Torque Mangement---Torque Reduction---Performance: Set all tables to 0. No need to run any TQ Management on a 80e. 60e is a whole different story.
6. TCC Duty Cycle: Set it to 100/99.
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Old Sep 15, 2019 | 01:06 PM
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Originally Posted by madmann26
My thoughts:

1. Check your full throttle shift rpm's. They're different.
2. Shift pressures---General: Set 90 from 300 - 640.
3. Shift General---Force Motor Current: Set the last table to 0. As it's set now, at 100% throttle, that value causes pressures to bleed off = bad. (you can experiment here if you want. Lesser values increase the the shift firmness but only remove very little at a time.)
4. Shift Timing--Desired Shift Time: Set all tables to 0. No reason to run anything other than 0 on a built trans.
5. Torque Mangement---Torque Reduction---Performance: Set all tables to 0. No need to run any TQ Management on a 80e. 60e is a whole different story.
6. TCC Duty Cycle: Set it to 100/99.

Thanks for the suggestions madman!

Went out to log before I saw this and confirmed the unlocking on the highway is due to misfire. Not enough to throw an SES light or code, but enough that the PCM commands unlock. I'll try the above suggestions and see how it changes things, but I might need to figure out the misfire issue. Or tune it out. But at least the converter is behaving as its told.

RedXray- I have my converter only locking in 4th right now as well, pretty much the only thing I changed myself when using Bluecats software.
Attached Files
File Type: hpl
transdrive3.hpl (764.8 KB, 48 views)

Last edited by meatwad; Sep 15, 2019 at 01:20 PM.
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Old Sep 15, 2019 | 01:55 PM
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Your misfire tables need some work.
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Old Sep 15, 2019 | 02:18 PM
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Trans seems to like Madman's suggestions just fine, I really appreciate the help!.

Drove around and punched it once to see how it would behave. TCC slip seemed appropriate and trans slip was negligible under power. So that seems good.

No misfire TCC shutoff on this drive. Still some random misfire in all cylinders here and there. No really sure what to make of that.

I'm not really sure about my timing tables and if they would affect misfire. I haven't touched timing yet, and spark seems very high compared to other tunes I have looked over. No knock when tuning so far fortunately. Though my engine is not the original LQ9. Blew that up ages ago, motor now is a 2007 LY6 (lower compression) running off the lingenfelter converter box. Also not really sure I have correct injector data, as I am using the LY6 injectors. Neither of the people who tuned the engine before me touched the injector data at all. I used a spreadsheet I found on HPtuners forums to convert Gen4 injector data into Gen3 format based on numbers from LY6 equipped 2008 6.0.

Enough to give this noob a headache.
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transdrive4.hpl (896.8 KB, 33 views)
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Old Sep 15, 2019 | 02:43 PM
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Engine---Diag---Misfire---Revolution Mode---Medium RPM

Adjust the non-32767 values by 10-15% (increase) until the random misfires stop in the log. This is the proper way to do it.

Most people will just put 32,767 in all the cells. Half a dozen of another.

Your spark map I don't like. It looks hacked up but it won't cause the misfires.
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