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Am I knocking?

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Old Sep 15, 2012 | 10:52 AM
  #1  
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Default Am I knocking?

My set up is CTSC with AC making 350whp at 13psi
Car was tuned a couple months back and I put about 2000 miles on it since
I recently went to a Dyno day and was told I was knock around 3500-5000 rpm
It was hard for me to hear it since I don't have a trained ear but now I do notice a pinging noises
Here is a data log of normal highway driving, can someone tell me what's happening in the log?

If it's been knocking the whole time how much damage am I expecting?
Thanks!

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Old Sep 15, 2012 | 11:10 AM
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From what I have read, 2V is the threshold of knock... but you shouldn't need to worry about it unless you are in boost.

The knock graph looks like mine under normal (no boost) driving- less than or equal to 1V
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Old Sep 15, 2012 | 11:14 AM
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Post a full throttle 3rd or 4th gear pull. Make sure you pull the log from the ecu instead of data logging with your laptop.
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Old Sep 15, 2012 | 12:06 PM
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Looks ok to me, also it's not so much the Volts to look for, it's the spikes that are detonation.
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Old Sep 15, 2012 | 01:41 PM
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350 @ 13 psi? Should be alot higher, what octane and IATs?
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Old Oct 5, 2012 | 03:02 PM
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Finally got a datalog on a full throttle pull in 3rd

That spike at 8700 rpm 98% throttle scares me. Is it a ghost knock or something is up with the tune?

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Old Oct 5, 2012 | 03:24 PM
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Try zooming in
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Old Oct 5, 2012 | 03:32 PM
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Zoomed in.



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Old Oct 5, 2012 | 04:29 PM
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Looks like knock, but I can't tell when it's happening, I get ghost knock usually when I let off throttle to shift, but I can't tell if you're spike is when you are WOT towards red line, or right after?
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Old Oct 5, 2012 | 04:35 PM
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Originally Posted by JoeyBalls
Looks like knock, but I can't tell when it's happening, I get ghost knock usually when I let off throttle to shift, but I can't tell if you're spike is when you are WOT towards red line, or right after?
It's happening right before I let off throttle to shift into 4th. I was WOT throughout 3rd and it only spiked towards the end right before shifting. I was also WOT again as I get into 4th but only till 7k rpm and it looks normal there.
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