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Author Topic: Negative knock  (Read 179 times)
Grimyqtips
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« on: November 18, 2024, 07:01:28 PM »

I recently flashed my Mk4 Gti with a Eurodyne Stage 1 tune. I've been logging and noticed a significant amount of negative knock, up to negative 12. I am looking for resources addressing this issue since I'm new to tuning and want to learn. What do these values mean? Are they pulling or adding timing? Should I be concerned? And if it is something bad what can I do? Attached is the datalog showing the issue. Thanks!
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prj
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« Reply #1 on: November 19, 2024, 04:36:31 AM »

I would flash it back to stock, or find better gas.
If you continue like this then pretty high chance you will need an engine.
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