changes have no effect

[LS ROB]

widebandvve1.2.hpt

can i get a second set of eyes on this tune? im trying to tune with the wideband but for some reason, it seems to only want to idle at 12.5ish AFR and is super rich everywhere like its in PE all the time. Thanks in advance.

[blindsquirrel]

Is... there a reason why Stoich is at 13.58? Much confused!

[LS ROB]

i actually was just changing that back. ive been using a comparison file to look at sort of like a guidance tool and had must've copied those in and forgotten to change them back. Regardless, no changes i make to the tune has any effect. Always commanding rich. i was hoping you may have caught a setting i may have missed. At one-point last night, it was rich everywhere and when you would apply the throttle it would start to lean out some. idk what i am missing but its got me going in circles. should i be logging AFR COMMANDED or EQ RATIO COMMANDED along with WB EQ RATIO?

[GHuggins]

You know it's in open loop right?

[LS ROB]

engine modes.pdf

yes open loop. i did however forget to put PE where i would normally have it. not sure on the fuel adder tables though. going to give it another go tomorrow and see what happens.

[07GTS]

ur sort of failing maf but also using it, are u ment to be SD only ?

[LS ROB]

yes i want to fail the MAF. what else needs to be done to fail MAF?

[07GTS]

p0101,2,3 set to mill first error, dynamic high 8100 dynamic low 8000, and the rpm and thresh 400 u can set to all 0, enable delay 0, should get it failed instantly

[LS ROB]

thanks man! ill give it a go after work and see what happens. p0101,2,3 was an oversight on my part. i knew something was wrong, i just didnt realize i had not set those. much appreciated!

[LS ROB]

ok. ive made the suggested changes but cannot get p0101 dtc to set. i can get 102, 103 and when i log maf airflow sensor state, it shows failed but no p101. I've changed things around several times; threshold counts, swapped dyn air enable/re-enable around, temp for p0101 made sure dtcs are all on 1st error.. just not sure at this point. only thing I can think that i haven't done is 0 out the maf curve which i will do when i post this.

widebandvve1.3.hpt


UPDATE***
zero'd out the maf curve, car wouldnt start....

[dhoagland]

Hmmm...
Have you checked it with a different scanner? Possibly the scanner isn't picking it up for some reason...

I seem to remember blindsquirrel saying he had one he had to set to "0" fail high and "0" fail low...
I could be remembering wrong, but might not hurt to try

[LS ROB]

ill give that a try in a few minutes D. i appreciate you offering that up. Hopefully maf fails.. ill report back

[LS ROB]

tried high/low 0/0. same result. car cranks, fires, and dies. if i put the maf curve back in it, it will start and run, so it has to be referencing the maf somehow. still not getting p0101.

[blindsquirrel]

I never get P0101 set, only P0102 & P0103. No MAF installed.

If the MAF is still there and plugged in and failed properly, you'll get only P0103. Removing it completely will add the P0102.

Even though the codes are set to 'First Error', they often won't show up in the logfile's 'Details' pane until the second session after a reflash, if that's the way you're checking for them.

[dhoagland]

I never get P0101 set, only P0102 & P0103. No MAF installed.

If the MAF is still there and plugged in and failed properly, you'll get only P0103. Removing it completely will add the P0102.

Even though the codes are set to 'First Error', they often won't show up in the logfile's 'Details' pane until the second session after a reflash, if that's the way you're checking for them.

Curious...
Will a Scanner like a Verus Pro pick it up on first error?

[LS ROB]

yeah, that's where I'm looking. I'll read dtc's and I get 102 & 103. So i should only be looking for the 103 then if I understand what you're saying? What is weird though, when I zero'd out the MAF freq. table, the car wouldn't run. That's why I thought it was referencing the MAF sensor somehow.

[blindsquirrel]

Your high count/low count thresholds are set to 400. Should be 1 for both. It's waiting till it gets to 400 before it fails.

[ECM] 4006 - MAF Freq Test High Count Thresh: Number of high frequency counts above the fail frequency before MAF DTC P0103 will be set.
[ECM] 4007 - MAF Freq Test Low Count Thresh: Number of low frequency counts below the fail frequency before MAF DTC P0102 will be set.

------------------------------------

If you check current codes it/they will show, but if you stop the scan and open the logfile they won't be in the Details pane, if it's the first run after a flash (or, I presume, after manually clearing codes).

If you have the MAF installed and plugged in but just failed in the tune, you will not get P0102 because the MAF is still generating a frequency.

[LS ROB]

Thanks for that info squirrel. I've got those changed and feel I should be able to make some progress now. Thanks again.

[LS ROB]

widebandvve1.6.hplwidebandvve1.6.hptcruise.hpl

I put in some drive time today and I seem to have an issue. If I copy / paste / multiply % 1/2, my VVE table looks rough but the numbers seem to head in the right direction. If i smooth after i paste, i always seem to be rich, especially in the 750-1000 rpm range. i attached the tune and log for tuning VVE. In that log, VE & DYNAMIC AIRFLOW are close but when i put it back into closed loop, DYN & VE AIRFLOW doesn't line up anymore as seen in the "cruise" log. Do I need to disable PE? I've seen some say yes and some say no. I still have it active as of now.

[dhoagland]

Are you smoothing over a large area?

I did some VVE tonight and different areas looked like Mt. Everest...
So I put the graph and 3D side by side... Used the mouse on the 3D and circled around the "Spikes" while watching on the graph...
Once I identified the range of the Spike, I would choose that in the graph and smooth...

When I was done with all the spikes I looked for big "Valleys" in the 3D and addressed them...