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Author Topic: 1.8t/20V KnockKnock  (Read 716 times)
DonkeyDub
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« Reply #15 on: October 12, 2019, 03:05:54 PM »

Here is another Log, oem flash



« Last Edit: October 18, 2019, 05:13:34 PM by DonkeyDub » Logged
nyet
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« Reply #16 on: October 13, 2019, 04:32:11 PM »

1) stock is almost always lambda 1
2) your idle rich condition is problematic, possibly due to your CAI. Good luck getting fueling right w/o the stock airbox. It can be tricky to get right.
« Last Edit: October 13, 2019, 04:34:01 PM by nyet » Logged

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« Reply #17 on: October 13, 2019, 05:10:18 PM »

It is  pain off idle, power dogs off when engaging the clutch !!

Would resetting trims and unplugging the maf be a good test to rule out the CAI??

Odd how in the last log, CF was mainly cylinder 2 and this log it's number 3
Maybe ill check the timing and do a leak down test for peace of mind.
When plugs were last pulled, Cylinder 1 and 2's piston tops were pretty damn clean
while 3 and 4 had darker tops



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nyet
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« Reply #18 on: October 13, 2019, 05:37:00 PM »

Would resetting trims and unplugging the maf be a good test to rule out the CAI??

No, not really, unfortunately. You can pressure test though to find leaks that might be contributing to the rich condition, though missing metered air during idle is pretty rare; more commonly an intake leak would lead to a lean condition (vac sucking in extra unmetered air).

Quote
Forgot to mention the vehicle has BF transmission and Dog Bone mount, and also
a Valeo Single mass flywheel.

Shouldn't affect fueling.

Quote
Odd how in the last log, CF was mainly cylinder 2 and this log it's number 3

I wouldn't read too much into this just yet.

Quote
Maybe ill check the timing and do a leak down test for peace of mind.
When plugs were last pulled, Cylinder 1 and 2's piston tops were pretty damn clean
while 3 and 4 had darker tops

Can't hurt but also likely won't help with fueling issues...
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DonkeyDub
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« Reply #19 on: October 13, 2019, 05:59:47 PM »

Yeah CF at this point is likely due to fueling.
Pressure tested a couple times and passed.
« Last Edit: October 18, 2019, 05:14:29 PM by DonkeyDub » Logged
DonkeyDub
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« Reply #20 on: October 14, 2019, 11:32:10 AM »

on ignition tables
Looking at '' KFZW '' X and Y both appear to be RPM
and ''KFZWOP '' Y = RPM and X = Load?

I don't think I will but if the CAI is causing fuel issues,
To get it to run smoothly, would most corrections be made in the table ''KFKHFM''.
« Last Edit: October 18, 2019, 05:15:08 PM by DonkeyDub » Logged
nyet
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« Reply #21 on: October 14, 2019, 01:26:39 PM »

Looking at '' KFZW '' X and Y both appear to be RPM
That makes no sense.

Quote
and ''KFZWOP '' Y = RPM and X = Load?

This and more is covered in both the s4wiki and the FR, and extensively throughout this site.
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« Reply #22 on: October 17, 2019, 03:30:55 PM »

In OEM2 Log during Cruise and idle

Lambda Req hits  0.80

Is this normal?
 
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nyet
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« Reply #23 on: October 17, 2019, 06:44:10 PM »

In OEM2 Log during Cruise and idle

Lambda Req hits  0.80

Is this normal?
 

No.
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DonkeyDub
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« Reply #24 on: October 17, 2019, 07:30:52 PM »


What would cause that?






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nyet
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« Reply #25 on: October 17, 2019, 07:51:56 PM »

bts, lamfa, atr/egt, or kr enrich.

All are covered in the FR and the tuning wiki along with which variables to log to diagnose.
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« Reply #26 on: October 17, 2019, 11:51:54 PM »

 Variables added: tabgbts_w  ,   tikatm_w   ,  tkatm    ,  lambts_w 


Actual boost being higher than desired at idle and part throttle.
Does this reflect a bad sensor or some other issue?
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nyet
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« Reply #27 on: October 18, 2019, 12:55:50 AM »

You managed to miss kr and lamfa fueling
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« Reply #28 on: October 18, 2019, 02:10:11 PM »

Looks like it could partly be BTS maps,

-It does req .80 at times without meeting BTS threshold

-Tries to maintain 760RPM Idle but it bounces between 720-760 RPM

-Added Supply voltage variable and it dips to 12.5 Volts

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nyet
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« Reply #29 on: October 18, 2019, 02:23:58 PM »

Looks like it could partly be BTS maps,

-It does req .80 at times without meeting BTS threshold

-Tries to maintain 760RPM Idle but it bounces between 720-760 RPM

-Added Supply voltage variable and it dips to 12.5 Volts



You know if you actually logged bts and kr lambda req you could stop guessing.
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Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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