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Old 05-11-19, 09:19 PM   #11
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Default Re: DAM Drop! HELP

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Originally Posted by yamahaSHO View Post
I'd start with a boost leak test. If that passes, do a compression test.
Thank you!

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Old 05-13-19, 12:49 PM   #12
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Default Re: DAM Drop! HELP

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Originally Posted by yamahaSHO View Post
I won't comment until I see the next log, but what I've seen so far, seems all over the place.
So this is the 3rd gear pull. I had re-flashed the tune it was perfect at this point

datazap.me | Ccscrub14 | Log 1557780361

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Old 05-13-19, 06:52 PM   #13
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Default Re: DAM Drop! HELP

That log doesn't look bad. Timing is a little on the low side... What fuel are you running? Essentially a stage 1 car?

If it comes back like you originally described, I would do a compression test. The other is, without a WBO2, you don't really know what the AFR is as the stock sensor will just flat-line and is not accurate once you start getting into boost.
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Old 05-13-19, 07:14 PM   #14
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Default Re: DAM Drop! HELP

Quote:
Originally Posted by yamahaSHO View Post
That log doesn't look bad. Timing is a little on the low side... What fuel are you running? Essentially a stage 1 car?

If it comes back like you originally described, I would do a compression test. The other is, without a WBO2, you don't really know what the AFR is as the stock sensor will just flat-line and is not accurate once you start getting into boost.
I'm in California so I think that's why the timing is a little low. Chevron 91. The car is stock. Now after reflash it runs great for a little while, prolonged even if I drive cruise at higher rpm. As soon as I drive under 3k rpm fine knock -11.45 feed back knock jumps around a little around 2.8 but sudden jumps to 10 sometimes. And then DAM fluctuates. .062, .500 and even 0.0. But it changes very quickly. If I jump on the freeway itll climb up to 1.0.. could this be a vacuum leak? A pebble stuck somewhere causing the knock? Or ringlands?if I can leave work early tomorrow I will be taking it to the dealer here who is aware of the issue and wanted me to bring it to do the compression and boost leak test.

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