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Via a multiplier or how it's figured into the torque model?
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
You gotta stop bringing up the torque model.
DSX Tuning - Authorized HP Tuners Dealer
http://www.dsxtuning.com
http://www.facebook.com/dsx.tuning
Just say no to bull s***.
IF YOU WANT HELP, POST A FILE!
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
That's entirely different from what the OP or myself are talking about. The engine is already in closed loop and going through it's entire temperature range while still showing the VE lean. The VE won't show correct until it gets within 30ish degrees of operating temp and sometimes later than that.
If you're running a SD only tune, then yes there is a way to correct the VE for temperature changes. You can do it the same way you correct the MAF temperature and it's relocation changes.
I'm still waiting to get a log back to see if the IVT table had any affect on this although I do realize I mis-spoke earlier, as it was pretty late and still going on about 3hrs of sleep right now, but the open loop tables you increase to add fuel and all of the other multipliers you remove to add fuel...
Last edited by GHuggins; 01-31-2024 at 01:14 PM.
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
I don't get it. RPM is a constant. How do you "correct" a constant.
DSX Tuning - Authorized HP Tuners Dealer
http://www.dsxtuning.com
http://www.facebook.com/dsx.tuning
Just say no to bull s***.
IF YOU WANT HELP, POST A FILE!
Is it just using it at idle or all of the time? Anything one could log to see if it's causing a particular issue? Could it cause surging?
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
OK, even though as you put that it shouldn't affect one model more so than the other or models in general this is what I found by adjusting the ivt table solely off of the VE fuel error, I was able to turn the 20ish VE error into 3 to 6 % errors as the engine was getting to temp with some random 10% at a couple of specific temps which seems to come and go for those temps depending on the log. It also seems to have not affected the MAF side of the calibration, which I was surprised about to be honest. I've used this table to help with some colder temp closed loop fueling issues on gen 4's in the past where I was working around some other problems, just not VE specifically. Wasn't expecting it to only affect the VE side like it seems to have in this case. Guess cause it's cammed, loping and leaning more that way? I don't really know on that one. The last temp column I left stock and tuned the VE at temp like normal. Guess I'm going to have to go back to better correcting these tables going forward.
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
Not surprising that it didn't affect VE....because its completely independent lol. Open loop (cold) enrichment is mostly governed by two effects...one being the impaired ability of the fuel to actually vaporize and participate in combustion, and the other being the poor dispersion/charge homogeneity effects that result in vaporized/burnable but otherwise uncombusted fuel leaving the cylinder. Neither of those effects has any relation to VE or a MAF calibration.
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
Back calculating error in a temperature defined table taking an average for those temp zones. Then fuel correction I just do the inverse I use for correcting the other fuel multiplier tables.
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
Sent you 2 pm's. Second has the VE formula. You'll think it's stupid
Last edited by GHuggins; 02-02-2024 at 09:06 PM.
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
Seems like you meant to send the one you forgot and then sent another equation entirely?
Open loop mults cannot be helped by any fuel trim feedback. The simple reason is that, where fuel trims are trustworthy...open loop multipliers are 1.0. This is by design and a fundamental behind ICE engine function. There has to be a physics based reason for applying an error correction.
Yes, I grabbed the first one quick as it's my usual fuel multiplier correction equation then when I went to send it didn't even think about the VE equation. It's also not using fuel per say to correct the table, but only use fuel to correct the MAF error, so as long as that part of the system is already dialed in I would think the airflow correction part of the formula should work. Don't know, it seemed to work, but errors do change log to log as I've been keeping an eye on it. I've used that equation while in semi-open loop (st ft corrections in open loop - guess that's what it's called) for correcting the ivt table even on 4th gen vehicles. Not the VE one for that, but the density / fuel multiplier one so yes it would be solely trim correction with that one. Always seemed to work there too and as I stated you might have to make a few passes due to the fuel vaporization and so on playing into it. I always assumed the OE was using some sort of fuel correction ratio to come up with the tables in the first place?
Last edited by GHuggins; 02-02-2024 at 11:30 PM.
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