Lean cruise AFR ratios wont save?

[BrandonA.]

Hello Mark, I went through all the steps again and made sure everything was set correctly for engaging highway mode. It still wont work and the only difference I can find is it says "Indeterminate: data does not match." vs. the one that actually works with your original settings. I realize you said that is normal once adjusting the settings, but it still won't work after verifying what you told me to double check. I am going to try and send you my bin to see what is wrong....... Hopefully this will clear some things up....


Thanks,
Brandon

[EagleMark]

55 bytes difference and the patch is applied. Do you have a data log and maybe I can see what's not letting it work? Or how do you know it's not working?

CTS has to be over 56* C, MPH has to be over 40 for 31 seconds before it is enabled and MAP has to stay under 74.92...

[BrandonA.]

Hello Mark I don't have a data log but that could be arranged. I usually data log in Winaldi. Would that work for you? I have never done it with tunerpro not sure how. Hopefully I could make a short log this week sometime after work. Let me know if a winaldi log would work? If not I will have to try and learn tunerpro.

P.S. the only way I know it is not working is that my wideband Air Fuel gauge does not change from 14.7 like does when I use your settings. Also in winaldi it should go into open loop mode and that is not engaging it stays in closed loop. With your settings it goes into open loop, plus air fuel ratio goes leaner into 16's. I tried to make it just slightly leaner than your settings and it stays at 14.7 or right around there and won't enter open loop. That is my reasoning.

-How about this in tuner cat I have my egr maxed out so it doesn't come on. Therefore, I did not apply the egr patch in tunerpro. Could this be causing my settings not to engage and start open loop. I don't see how this could be the issue when it works with your settings and I don't use the EGR Patch in either?

Does any of this help????


Brandon

[BrandonA.]

Another idea , I don't know if any of this helps you? However, I used the difference tool in tunerpro between your patched settings that works and the one that doesn't work with my air fuel changes and there isn't much difference here are the results.

2Bytes different
address .........Item title....... .............My Air fuel bin settings ...........Marks Air fuel bin 0001..............Checksum........................ .................61......................... 5F
0B2E .............HIWay Lean Cruise and Esc. done patch A1 .........................9F

Shouldn't this tell us exactly where the change is between the two or is the problem not here in the data?

Thanks I am stumped if you can tell by my random ideas!!!!!

[EagleMark]

Another idea , I don't know if any of this helps you? However, I used the difference tool in tunerpro between your patched settings that works and the one that doesn't work with my air fuel changes and there isn't much difference here are the results.

2Bytes different
address .........Item title....... .............My Air fuel bin settings ...........Marks Air fuel bin 0001..............Checksum........................ .................61......................... 5F
0B2E .............HIWay Lean Cruise and Esc. done patch A1 .........................9F

Shouldn't this tell us exactly where the change is between the two or is the problem not here in the data?

Thanks I am stumped if you can tell by my random ideas!!!!!

That 2 byte change is just the checksum. Are you doing this with an Emulator?

You also need to add some spark timing as AFR get's leaner it needs more spark.

[BrandonA.]

Hello Mark, you got it right it works just fine then I change AFR and it stops working. I only raised to 16.10 in the 50 map column I was going to do more but it quit working once I made the change. So I don't believe I raised it too far. Also I don't believe i can add timing and save it as that will also be changing the original bins numbers so I doubt it would work. I haven't gotten that far as I was trying to get the AFR ratios figured out first. I don't have an emulator, I have to pull the chip out and hook it up to my laptop everytime I make a change. I know there are better ways but I only have this one setup to work on and don't mess with it too often....
I will try the egr patch this week and let you know if it worked..... Any other ideas are very appreciated!!!!

Brandon

[EagleMark]

Are you using TunerPRo to make the changes? Do you save bin when changes are made? This updates checksum. I'm not sure if TunerCat updates checksum when changed? Haven't used it in years...

With out a updated check sum, which should change, after a change and saved you will get an Error 51 and nothing works right during that...

I think you had a check sum issue? I just used your bin posted and came up with a different check sum then you posted? Made a change to HLC AFR in 60 MAP and saved, compared and it was the only change along with check-sum.

Or maybe there's an issue with the XDF your using? What version?

[EagleMark]

I don't think I remember how to use WinALDL... it's been so long! Do yourself a favor and get some good data logging with TunerPro!

I'd use the EGR disable patch as it is properly set up to disable EGR, there are many wrong ways that don't work! and it could be an issue? If not with this then something else? Plus no ALDL bit to see when it comes on and off?

So it is working, then you change AFR and it is not working? Are you going higher then 16.5 AFR? Which is max allowed in "Closed Loop - Max Lean AFR"

Or it could be "Open Loop - Max AFR " which is set to 15...