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  #1  
Old 04-28-2023, 09:09 AM
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grounch is on a distinguished road
Wrong values for MAF and boost?

Hello
I'm not sure the values i get via odb scanners are correct.
The variation seems to make sense, but the value of 200g/sec seems a bit excessive (I've found that it should be more around between 2 and 20, not 200).
Is my MAF shot and needs replacement? When i disconnect it i get 199g/sec.
Also are turbo reading looking fine? Around 22psi at full throttle seems correct but i might have a slight leak somewhere (hissing at low rpm).

Thanks

Last edited by grounch; 04-29-2023 at 05:10 AM.
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  #2  
Old 04-30-2023, 04:42 AM
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No one wants to share their confidential data?
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Old 04-30-2023, 08:53 AM
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X5chemist will become famous soon enough
Diesels are rare over here.
How many codes are present? I have no idea on fuel measurements for a diesel.
What are your operation symptoms?
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Old 04-30-2023, 03:01 PM
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I don't have any code related to the maf, only the egr (because it's deleted).

The symptom is power loss under load. For example i floor it to merge on the highway, let of the gas, then floor it again and nothing happens. The car downshift but doesn't rev/accelerate.
Also have another issue with same scenario, except when i floor it, it hesitate to downshift for couple of secs with a rattling/ticking noise, then accelerate normally but with a little more black smoke than usual..
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  #5  
Old 04-30-2023, 04:00 PM
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Quote:
Originally Posted by grounch View Post
No one wants to share their confidential data?
I'd share it if I had any - don't have any handy tools for reading these values.

I'll try OBDFusion on the MAF but I know it won't show boost pressure - although INPA will do those.
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