Boost leak or failed component?

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Topic: Boost leak or failed component? (Read 6180 times)

dokalanyi

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	Boost leak or failed component? « on: January 06, 2017, 02:05:52 PM »

Hi All,
I'm getting WGDC of 100%. Car was running fine on same tune. It has cut off power at one point, but I failed to replicate even after hard driving.

I've attached logs.


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dokalanyi

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	Re: Boost leak or failed component? « Reply #1 on: January 06, 2017, 02:12:05 PM »

Couldn't figure out how to modify attachments, here is the log when car was fine. Same tune.


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nyet

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	Re: Boost leak or failed component? « Reply #2 on: January 06, 2017, 04:16:34 PM »

did fueling change?

if it were a boost leak, i'd expect the opposite lambda control action.


« Last Edit: January 06, 2017, 04:19:47 PM by nyet »	Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

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 ex

nyet

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	Re: Boost leak or failed component? « Reply #3 on: January 06, 2017, 04:20:17 PM »

I'd say turbo failing or collapsing inlet, or some other restriction.


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dokalanyi

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	Re: Boost leak or failed component? « Reply #4 on: January 06, 2017, 08:17:54 PM »

Quote from: nyet on January 06, 2017, 04:16:34 PM

did fueling change?

if it were a boost leak, i'd expect the opposite lambda control action.

Fueling didn't change, and trims are -0.2% and -5.5%. I'll open her up today and inspect the turbo and hoses.

There is also a very low pitch whistle when I accelerate (around 2k rpm).


« Last Edit: January 06, 2017, 08:44:46 PM by dokalanyi »	Logged

ktm733

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	Re: Boost leak or failed component? « Reply #5 on: January 07, 2017, 09:48:54 AM »

Do you have a catalytic converter?


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nyet

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	Re: Boost leak or failed component? « Reply #6 on: January 07, 2017, 12:43:50 PM »

Also maybe DV leak?


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dokalanyi

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	Re: Boost leak or failed component? « Reply #7 on: January 09, 2017, 12:23:44 AM »

Quote from: nyet on January 07, 2017, 12:43:50 PM

Also maybe DV leak?

I'd come to update the thread with a solution ..
Yes, the diverter valve was torn. Replaced it and the car was back to normal!


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