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

Put your headphones on for best results.

TIME STAMPS:
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

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.

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.

#highperformanceacademy #knock #ping #detonation #hpa #knockouts #learntotune #005

[hpa]

TIME STAMPS:
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

[hpa]

Put your headphones on for best results.
0:00 - Introduction
0:10 - Equipment Used
0:40 - 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
Want to learn more about EFI tuning? Start here for free - bit.ly/freetuning

[dandez]

2:48 for the knock sound. You're welcome.

[syth]

With that background noise and your style of presenting the only thing you were missing was a flight attendants uniform.

[matlock]

Is the hissing sound what knocking and pinging sounds like? Because I don't hear anything different.

[TheUnclestein]

I'm a sound engineer and I find this very interesting. I haven't got access to performance monitoring kit but I've tried various mics and low frequency transducers on my engines using audio filters to isolate the different frequencies. It's also interesting hear a slowed down recording.

[schalachi]

Thank you for helping me set this up on haltech platinum pro. it helps me dial in my engine for reliability.

[Levibetz]

Thanks for this demo! I have never actually heard someone demonstrate this outside of my own experiments.

[grahamerosewarne]

Another quality HPA informative blog post. Always awesome content 👍💯 Aussie Fan 🤟🆒🤣

[RocketRaspeed]

I have tried to use knock ears on the dyno and found that all it did was add to the amount of noise rattling my brain. I just ordered a knocklink and I'm hoping it will be a more useful tool.

[rskylineprojects]

wish we had more blokes like you in Sydney, that know how to utilize and actually use saftware.

[beristainbear]

Wow, coming from someone with 0 previous knowledge, that was very informative and helpful. You’re an amazing teacher

[chrispompano]

KNOCK THREE TIMES song by TonyOrlando!
Here's my favorite & depressing knock n pinging story that I or dozens of techs could never fix. Had a 1991 Cadillac Brougham 305 Chevy TBI LO3 motor that would ping at WOT (sounded like a glass jar of marbles under the hood that's how loud it was!...a little at part throttle. Would only stop on 100 octane. Did every trick in the book....had to run the coldest Delco plug & still saw aluminum peppering on the porcelain & eventual burnt grey melted spot on center porcelain. Used to make my rounds to 4 Caddy dealers back then & they couldn't figure it out. One of the old techs said I was 6 months til warranty drain oil out, drive it til it knocks, put oil back in & get a new short block which would then verify if it was mechanical or fueling/ecm! I'm sorry I never did it....drove me crazy, & now there's all this new diagnosis technology to verify that problem I lived with for One tech figured the factory resurfaced the heads making high compression ratio with 180+psi.

[chanmy]

thanks.. has been looking for the knocking sound and its very clear. tik tik tik.

[mr.m]

My hears are still ringing. Super informative video. Thank you for sharing your knowledge...

[recconboy]

If the engine knocks due to low octane fuel, will it generate any diagnostic trouble codes (DTC) in the engine report? If so, what would the code be related to engine knocking?"

[dmytroi]

So what ECU do to prevent knocking (or reduce harm from it)? Advance timing even more?

[Dcc]

I had an LS1 that pinged so damn bad just barely giving it gas. There is no check light codes, no vacuum leak, ran Shell Premium, even replaced a fuel pump and filter, and it has a new timing chain. I just took it to the Chevy dealer and let them reflash the ECU. Most of the pinging went away! Doesn't make sense to me how it would do that other than the ECU needing a calibration from wear and tear over 125, 000 miles?

[richardpower]

Do another 1 please Andre, With a Big Turbo and Antilag. Be Interesting to see how Antilag effects knock levels.

[RyuMoto]

Andre, it would be super useful if you could have also shown a wot run with no knock.