need help with wideband think something wrong

[Cool28]

I have a ngk afx wideband have it connected to port 1 and im getting the readings on the scan tool but my lamba is always at 1.701 so when I apply filter it gets rid of it all. looks like I nvr set it up right from the start -.-

log and calc pid below.

[Cool28]

Ah think I figured it out. Lambda I'm not using I'm use afr right? So in filter I'd put afr ratio greater then 15.4?

[joecar]

You're using analog wideband, so your pids are: EXT.AD1 , CALC.AFR_NGK1, CALC.WO2BEN.

EXT.WO2LAM1 is a serial comms pid (which if not connected will say 1.701).

[joecar]

Use CALC.WO2BEN rather than CALC.BEN_NGK1.

[Cool28]

Ah ok thank you thought that was weird but the rest is right yes?

[joecar]

Yes, rest looks right.

[Cool28]

wow when I change to wo2ben my Maf adjustments really change. .75 in some areas is that right?

[joecar]

In your logs does (1/EXT.WO2LAM1) diverge from GM.EQIVRATIO by a factor of 0.75...?

Note: (1/EXR.WO2LAM1) is the same as EXT.WO2EQR1.

Post some logs.

[Cool28]

If I could son next to the wifi at work I could post but the min for that is .95 avg 1.03 max 1.13. It's only .78 for a couple freq. then it's .98 to 1.1. I loaded it and it brought in some of the afr so I guess it's right.

[joecar]

Also, additionally, do the frames where WO2BEN diverges disappear when you apply the transient filter...?

[Cool28]

Yes it does

[Cool28]

Hmm now I'm thinking something not right with Maf map. Logged twice for about 30 mins each and each time has me lower low hz and raising high ones.

I'll have to post a log when I get home

[Cool28]

heres my log and my tune. This is a heads and cam ls1.

Maf map uses data from ben from serial WB (factor).

the tune cold starts way lean unless that from pe being turned off for tuning. When warm decal rich(11-1) tip in to throttle lean (15-1). Driving afr look good

Ive tried everything in ve to try to fix decel rich to no end. Also don't know why even after I adjust maf it wants me to adjust it again by the same factor

[statesman]

the tune cold starts way lean unless that from pe being turned off for tuning.

Your PE is not turned off in this tune... but it is set dangerously lean.

I recommend that you do NOT drive with this tune.

[Cool28]

Ah ok I see what u mean the 1.16? Hmm in tuning tips said to set that to 1.16:/. I'll change it back

[statesman]

Ah ok I see what u mean the 1.16? Hmm in tuning tips said to set that to 1.16:/. I'll change it back

Yes, set it to 1.16 EQ ratio... you've set it to 1.16 lambda, which is about 17:1 AFR... dangerously lean. Always be sure to check if you're setting a value in EQ or lambda... getting PE wrong like that could cost you an engine.

[Cool28]

Big thanks. Afr is right in now on starts. Still have a lean tip in though.

[Cool28]

Hmm just had a thought. Would pe be in control when deceling? Then when I give it off idle it uses ve so I get a lean spike?

[joecar]

+1 what statesman said... set your tunetool units to EQR, restart the tunetool, and redo the PE table.

[joecar]

PE enables when the following are met: B3608, B3609, B3613, B3616.

So the PE table is not active during decel (since B3616 would not met).

[joecar]

... Then when I give it off idle it uses ve so I get a lean spike?It may be using either of MAF or VE...

Try bumping up low end of MAF a little and see what happens.

[joecar]

But, you should disable CL/LTFT/STFTOL and use your wideband to separately correct each of the VE and MAF tables...

CL: B4205
LTFT: B3801
STFTOL: B4206

To correct VE:
- disable MAF: C2901, C2903, make sure MAF DTC appears.
- use WO2BEN to correct VE (apply transient filter).

To correct MAF:
- enable MAF: C2901, C2903, make sure MAF DTC disappears.
- disable VE: B0120
- use W02BEN to correct MAF(apply transient filter).

Then when VE and MAF are happy, enable everything above, and try Calc.VET to to see how close everything is.