anyone happen to know what causes these dips in my timing? Keep in mind, I have not tuned the timing yet. I originally thought it was due to my driving and being on the pedal off the pedal type thing. quick log.hpl Seems I do feel some slight surging while steady cruising.
Log the following:
ETC Torque Management Type
Spark Torque Management Type
Fuel Cut Torque Management Type
Fuel Trim Cell
DFCO Active
Spark State
i will get it set up and see what we find. thank you.
got those added to the channels. Will i need to create a histo. for each?
Once data is recorded in the channels list, you can go back at any time and add that data into graphs/charts/whatever other display/processing.
Thanks man. ill try to get some logs in tomorrow after work.
Fish bite's like that while under steady throttle are usually traction events. The channels added in should help, but are you running different than stock tires front to back? Is traction control still enabled in the tune? Have you tried disabling it to see if the problem goes away? If it does then you can either change the settings to keep traction control somewhat or you can just eliminate it all together. That's granted that it is indeed traction control.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
What's up with your P0108? Might not hurt to log MAP raw voltage to see if there are any glitches, (edit: 'in addition to') the converted pressure. Sometimes when there are codes the PID will use substituted (fake) data as a failsafe.
For the other current codes, if those are things not being used you should disable the DTCs for them. Thinking in particular about oil pressure and the oil starvation feature. Unknown if it will cause this specific issue but it needs to be fixed or turned off, might as well clear away as much as you can now. Less potential for unknowns leading you off in odd directions.
Last edited by blindsquirrel; 04-03-2022 at 11:46 PM.
front tires are 235/45/17 rears are 315/35/17. And traction control under Torque Management is all disabled but i do have some Torque Limit vs RPM tables in Torque Management active.
Thanks!
ill get those DTC's turned off. should they be no error reported or no mil light? Oil starvation has been disabled and oil is being monitored by Dakota Digital vhx guages. (Might not hurt to log MAP raw voltage to see if there are any glitches, (edit: 'in addition to') the converted pressure.) <---<< not sure how to do that. i looked for MAP raw voltage in my channels and didnt find anyting..
forumlog.hpl as requested, here is a log from today. if i need to log something different or if im logging wrong, let me know.
much appreciated
Post the current tune too. In the log your going in and out of coast mode. Appears to be when easing off of the pedal and hitting lower torque model cells causing it to hit negative torque areas. If you watch airmass starts dropping right before it cuts timing. At this time it starts to "tickle" the decel torque areas of the torque model. You might be able to just shift your rows up one to correct it. Just make sure it still decelerates correctly when wanting it to decel.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
current tune 3.31.22 vve1 maf.hpt here you go Sir! I do feel some bucking mostly when steady cruising with very light throttle.
Hey ghuggins
If Cam has lots of overlap EOIT can contribute to bucking too, correct?
2011 Camaro 2SS Convertible L99 Bone Stock for now
2003 Dodge 2500 5.9 Cummins QC 4x4. Airaid, 2nd Gen Intake, Grid Heater Delete, D-Tech 62/65/12, Magnaflow. Bully Dog: Propane Injection, Triple Dog W/Outlook Crazy Larry. Edge EZ, BD Flow-Max, 48RE: Sonnax Sure Cure/Transgo combination, Derale turbulator, billet input, Triple Disc, Super servo, 4 ring Accumulator. :beer
Yeah, that appears to be exactly what's going on. Open your torque editor. Copy your 200 or 20 cyl airmass rows and paste into your 100 or 10 cyl airmass rows then interpolate the tables up to your highest value row then calculate coefficients and retest. I've rarely ever run into this and there are other ways to fix it by making your pedal more dead, but the torque model should get things back straight. You may have to leave your lower rpm areas the same for idle control with your cam and then smooth the transition back into the higher rpms. Just test and see what it wants.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
Yes, but in this case what I'm "assuming" he may be describing as "bucking" is probably the timing being yanked then shoved back in...Originally Posted by dhoagland
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
are you referring to the VIRTUAL TORQUE table when you say torque editor?
Yes, just take a look at the 30 spark table in the virtual torque editor, your log will show you dropping in cyl air mass down into the 12 row coming from the 20 row while commanding something like 33 degrees of timing. So 30 timing table in the editor > 20 going down into the 10 row at 1800 rpms has you hitting (-) torque cells triggering the "coast" logic. You'll also want to check your dfco settings - make sure the airmass to enter dfco isn't too high. These usually all try to correlate with one another.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
interpolate or extrapolate?
interpolate
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
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