Knock / Pinging / Detonation | What does it sound like? [FREE LESSON]

Knock is the biggest killer of performance engines so it pays to know what you’re dealing with. In this lesson you’re going to hear what knock sounds like and how an ECU can detect it. Put your headphones on for best results.

0:00 - Introduction
0:10 - Equipment Used
0:40 - Plex Data Log Explained
1:32 - Preparing to Test
2:23 - Base Sound (No Knock)
2:48 - Knock Audio
3:29 - Knock Audio 2
3:40 - Lesson Debrief
4:04 - Outro

 This example is applicable to any tuning solution and 4 stroke petrol EFI engine and we use a Plex Tuning Knock Monitor V2 and Link ECU to demonstrate this knowledge in our Nissan 350z on a Mainline dyno.

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Comments
  • 's profile image
    re Fiat ducato 3.0 cng. year 2011 ecu magneti marelli 51857113, engine 3.0 136HP(F1CE0441A) M40.
    problem: cng tanks are changed for lpg tanks. Ecu thinks engine is still running on petrol because dual fuel petrol and cng were installed. Octane of petrol is lower as lpg. so because octane of lpg is higher as from petrol a later ignitionpoint is needed now the ignitionpont comes also to early with result less power. Can stand aloneknocksensor solve this problem ??
    - Wimkorebrits1942 Netherlands
    14 months ago