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Hey all, any pros out there willing to share some of there channels and charts (xml?s). ive managed to pull a couple of log files(from various posts) and then saved off some useful information(channels) but some of it is quite overwhelming being fresh on this scene.
or even a previous post ive not stumbled upon would help.
my current diag problem is a rough idle after start, and initial take off hesitation; both when warm(not cold and not up to full temp) start.
thank all
will
Attachment 162243
Attachment 162244
These are our Generic channels to start with when tuning Gen V vehicles.
If you're doing VVE on a stock cam or VVT camshaft vehicle, you'll need to set the corresponding filtering function in the histograms for whatever positions you'll be targetting.
These should give you majority, if not all the info needed to get majority of the Gen V vehicles dialed in.
If you are wanting to tune Injection Timing you will also need to add Primary SOI and Primary EOI to the channel list. I have a tab pre-built for the injection stuff also at the bottom but I don't run SOI or EOI in these channels on my laptop as it causes these channels to run very slowly and sucks to get data. I end up changing my channels to solely Injection Timing Channel list when it comes to that. If you have a nice laptop, you may be able to add them both without any issues.
thanks, here is a log... went out earlier so the truck was ideal for showcasing my issue, with idle..Quote:
Originally Posted by RaceReadyTuning
.Attachment 162261
any insights will help. and greatly appreciated, looking to learn. if nothing leans to a hardware issue ill drop in the tune you passed me on my other post. and start this steep learning curve. thanks again.
Will
MAF and VVE are way off. Overall it's very rich. You need to fix those before diving into anything else.
I added the channels and layout I use for idle and low rpm diagnostics. Some are there in order to use Cringer's MAF and VVE tools as well as CYN_CRVR's Driver Demand tool. Everyone has their own preferences :shrug:Attachment 162271Attachment 162272
thanks! mechanical issues for running rich.. poor spark, or bad injectors... two things i havent touched yet....Quote:
Originally Posted by 96GS007
I'm not a truck guy but the cam you listed in your other thread is advertised as "stock" for nearly every vehicle built with a Gen V LT1 or similar. Soooo, I did a compare of your tune file to a couple stock Corvette LT1 files and a Camaro file. As I expected, there are differences across the board, including the MAF and the VVE tables, External Load, and on and on.
My 30 second eyeball analysis calibrated with your fuel trims from the log you uploaded says that the Corvette and Camaro tables more closely match this cam than your truck tune.
With that as a backdrop, I think you need to work the tune vs looking for mechanical issues. This and $5 will almost buy you a cup of coffee these days....but that's my opinion.
I dont post often on here anymore and just want to say it's nice seeing someone offering a helping hand, without asking for money. That seemed to be a big issue a few years ago. You even sent out some charts and tables to help get started.....that's cool. I never had a problem giving out pid's layouts and math functions to anybody, no matter how much time i put into them. This was always supposed to be a learning forum.Quote:
Originally Posted by RaceReadyTuning
Cheers.
thanks! looking into Cringers tool, but im not clear on which histogram to pull from the log? and what if any tuneing(setup) would be needed prior to pulling th log. im missing a setup post(forumfuns)Quote:
Originally Posted by 96GS007
Attachment 162331
For Cringer's tools, use "MAF CL" and "MAF CL Dummy" for the MAF tool. For VVE, use "VVE CL" They have the filters in them.
I recommend looking at his "how to" videos until you're comfortable with the steps and the terminology. Just in case of download issues, always double-check the filters (the math is on his public Google drive) and also check the axis in the log to make sure it aligns to the axis in the tables in your tune file. By axis, it can also be the MAF frequency buckets as well as horizontal and vertical "axis" in a conventional sense :)
vve tables viable for edit... manifold closed, open, dod manifold open, dod manifold closed, intake angles from-20to+20(/1deg) ... 4*41=164 tables to tweak... since im assume the head cleanup has dropped my base cyl volume, (i get in my case no DOD i could loose half that work) am i missing something? the caveman in me whats a simple fix, the analytic sees much work ahead. (wanna turn a screw, not get lost in the land of 1/0's) any yall experienced guys in Michigan?
You edit the "Open" table and then copy to closed. With no DOD/AFM you don't have to worry about the others and your intake angle should be = 0. Soooo....1 table and then copy/paste. As far as cylinder volume....if it was to basically clean off head gasket debris and give a nice surface for install I wouldn't worry about it.
I cleaned up the graph files I posted and also added the channels I use in my prior post. Like many folks, I change stuff and experiment and change more. That's why if you download something it's always important to review what's there and make sure it makes sense to you before blindly using.
Gen V is daunting and there is something to paying a pro for a day and being done with it.
Attachment 162449
i guess rich called.... thinking a gross edit to the whole table... x(.9) and run again...
thanks again for getting me on this path, im almost to the point of just going for it make some little swings and survey adjust and loop... gonna take a look at the similar motors suggested in your previous post to make sure the shapes correlate.Quote:
Originally Posted by 96GS007
I'm assuming that other than the cam, your engine is stock. No cat delete, no CAI, no 103mm throttle body, no ported heads, etc, etc. Stock other than the cam and associated DOD/AFM changes. With that as a back-drop, here's what I would do....Quote:
Originally Posted by w313zrd
I looked at your tune and to me, the idle rpms are in all sorts of conflict with each other. The PCM doesn't know what the hell rpm to idle at. Get those addressed first and log how it runs and then let's see if we can improve from there. The easiest way to do that is go back to the stock tables and if you want a higher idle, do a global +100 for each table. Contrary to popular belief, the factory guys are pretty smart.
You can see in the screen shot how the rpms don't align across the various tables. Look for instance at 198* and 30 seconds of run time. Nothing matches. Look at the idle speed for coast down. It's different.
Attachment 162453
If the above doesn't help, then I'd...
1) Go back to your stock file
2) Update the tune for removal of DOD/AFM. That's it. Nothing else. No idle rpm. No Adaptives. etc
3) Try to start the engine and get a log. Only Idle. Do not drive. Do not rev. Idle. Assuming it runs, get it to operating temp and log it.
Post the log and file and then we'll try moving to the next step.
If it does not start, will it start if you're work the gas pedal? If yes (ie it needed more air), the Base airflow table needs to be tweaked.
back to stock idle, flex fuel and dod delete. Attachment 162460
warmed up:Attachment 162461
looking at what this ^ is showing thing are back inine.... i dropped in that tune, before going on a long drive last night( in my mind to wash out all the trims associated with the flex fuel option. ive only ever run 93.)(loged it will google drive as its too long here)https://drive.google.com/file/d/1TZg...usp=drive_link
heat soaked:Attachment 162462
from what i understand the cam is stock, just replaced with the deleted afm/dod valley pan.lifters and rods too(heavier), heads cleaned up and slapped back together.
looks like i would need some of your math files for the chart you passed to have a chance... i appreciate all your help.
You'll see a Google drive "request for access" from me.Quote:
Originally Posted by w313zrd
I also figured out why things are working with the log....the fuel trim cells I log for a 2019 are different than what's needed for yours. Have to see if I can find those. I remember someone posted them but didn't save the info.
Fuel Trims aside....How does it start and idle and drive?
Math
MAF CL and MAF CL Dummy math: ((DynAir+(DynAir*(STFT + LTFT)/100))-MAF)/MAF*100 Expression=(([2320.71]+([2320.71]*([50116.156]+[50114.156])/100))-[50040.71])/[50040.71]*100
VVE CL math: ((DynAir+(DynAir*(STFT + LTFT)/100))-VVE)/VVE*100 Expression=(([2320.71]+([2320.71]*([50116.156]+[50114.156])/100))-[2311.71])/[2311.71]*100
Expression is what you load into HP Tuners. The description is what you load into the notes section of the math
Filters for the MAF CL, MAF Dummy CL, and VVE CL graphs:
[2517.161.avg(1500)]=0 and [2517.161.avg(-200)]=0 and (abs([50090.156.slope(1500)])+abs([50090.156.slope(-500)]))<2 and [50118.238] = 1.00
In your case, the last part of the string (bolded above) should be updated to: and [50118.238] >0.94 and [50118.238] <1.0 Your PCM is commanding an Eq Ratio of 0.942. Not quite sure why....that's above my head. When I divide the Stoich value by 14.7, it's close but not exact.
Note: The filters replace the one I'm using which use Fuel Trim Cells
Cringer's Google Drive with the above info: https://drive.google.com/drive/folde...z66IhSe-rifYuh