Re: Massive timing retardation + low power

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BlkSerialKilla

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	Re: Massive timing retardation + low power « on: November 14, 2015, 06:03:53 PM »

Not to thread jack but is it possible my MAF is going bad? I'm feeling my timing correction is possibly due to it. I have a log and pictures bellow.


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nyet

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	Re: Massive timing retardation + low power « Reply #1 on: November 14, 2015, 06:42:07 PM »

If you can't make 12psi with 100% dc you have other problems


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ddillenger

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	Re: Massive timing retardation + low power « Reply #2 on: November 14, 2015, 06:47:39 PM »

Also, maybe look at how many knock events you have. 7.5 degrees of timing being pulled is not massive. That will likely only take 1.5 degrees pulled to eliminate entirely.....


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vwaudiguy

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	Re: Massive timing retardation + low power « Reply #3 on: November 14, 2015, 08:33:22 PM »

Quote from: ddillenger on November 14, 2015, 06:47:39 PM

That will likely only take 1.5 degrees pulled to eliminate entirely.....

I'm not sure if that statement is application-specific for this particular engine/setup, but I've never seen a case where I had 7-8 deg of timing pull, and only 1.5 taken from the table was enough to resolve it. I'm sure I'm missing something somewhere.


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	Re: Massive timing retardation + low power « Reply #4 on: November 15, 2015, 01:07:28 AM »

It will. It's the same the other way around.
0.75 to much can couse 3 - 4.5 deg retard.


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BlkSerialKilla

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	Re: Massive timing retardation + low power « Reply #5 on: November 15, 2015, 08:06:13 AM »

Quote from: nyet on November 14, 2015, 06:42:07 PM

If you can't make 12psi with 100% dc you have other problems

I agree, I've been attempting to resolve that issue and right now everything is pointing to the wastegate going south unfortunate for me. I've tried boost leak test and have corrected everything else I could find. So I'm hunting a good k04 or F21. I'm at 172k miles is this to be expected around this mileage? I've been experiencing this issue since 160k.

Quote from: ddillenger on November 14, 2015, 06:47:39 PM

Also, maybe look at how many knock events you have. 7.5 degrees of timing being pulled is not massive. That will likely only take 1.5 degrees pulled to eliminate entirely.....

I'm going to do a new log supplementing zkrvf_0-3 and report back.


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nyet

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	Re: Massive timing retardation + low power « Reply #6 on: November 15, 2015, 11:47:59 AM »

Quote from: BlkSerialKilla on November 15, 2015, 08:06:13 AM

I'm going to do a new log supplementing zkrvf_0-3 and report back

There's not much point in wasting time tweaking bad hardware. Get your HW problems sorted first, then tune.


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