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 Old 09-01-2012, 11:04 PM   #1
 
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Default Knock, Looks Terrible

Check it out, I have no idea what to look for. I know that I felt a bit of hesitation or something fishy when I was logging this, it was quite humid as well. Would upgrading to one step colder plugs help this or does it look catastrophic? Cobb OTS stage 2 SF, TIH map.

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 Old 09-01-2012, 11:07 PM   #2
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The car is running a little lean for my tastes. Also what is the overall timing? You should definitely be logging that.

Is this also a common occurrence or did it happen in that 1 log?
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 Old 09-01-2012, 11:12 PM   #3
 
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That was the first time I felt anything like that, didnt feel it after that one log either. I'll have to add back in the overal timing in the datalog, I have no idea. Bad gas maybe?

How does my fuel pressure look?

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 Old 09-01-2012, 11:14 PM   #4
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Fuel pressure looks fine. When asking for help also give more information such as what your mods are as well as what map you're running etc.
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 Old 09-01-2012, 11:17 PM   #5
 
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I should have put my mods in my sig by now. Cobb sri/tih, dp, tp, resonators removed, bpv, stock hpfp (i know, i know, I'm watching it closely). Just running the ots stage 2 SF/TIH map.
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 Old 09-02-2012, 03:23 PM   #6
 
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Your AFR's went lean as fuck after your flat foot shift. If you notice you started climbing into the high 12's almost 13:1 AFRs which undoubtedly cause the KR onset which only got higher with the car leaning out further.

I know theres a couple dudes around here that have been trying to tune out this lean condition from flat foot shifting, but, the thread kinda died. I cant remember where it went.
I just dont do it. Haha.
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 Old 09-02-2012, 06:37 PM   #7
 
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Interesting, I have noticed this does only happen when I flat floot shift and at the same time. Yeah, it would be nice if it could be tuned properly to not run so lean during ffs.
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