knock\det detection
What ways do you guys use to detect and retard spark if knock\det is found?
I have a ms2 but I've heard hit or miss stories with the various implemenations for it. So I decided to pickup a j&s safeguard as well. Wondering if others use simmilar units or their standalone ecu's |
https://www.miataturbo.net/miata-parts-sale-trade-5/detcans-v2-54302/
Before that I used my ears and watched the oil pressure gauge. |
Those det cans will tell you more than you can hear on a dyno or on the racetrack. You can even plug it into an MP3 player or phone and record the audio, listen to your entire session, and know if you're getting detonation or not, even the faint stuff that the naked ear can't hear.
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Originally Posted by hustler
(Post 698496)
Those det cans will tell you more than you can hear on a dyno or on the racetrack. You can even plug it into an MP3 player or phone and record the audio, listen to your entire session, and know if you're getting detonation or not, even the faint stuff that the naked ear can't hear.
What I'd really like to see is someone with more time than myself sync it up to a datalog and watch it play through ala Pink Floyd/Wizard of Oz. |
Does anyone have some recent audio recordings of knock?
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Originally Posted by BenR
(Post 698490)
https://www.miataturbo.net/showthread.php?t=54302
Before that I used my ears and watched the oil pressure gauge. I have a knocklite and also a hydra. Single knock sensor with the signal tee'd to the knocklite and the hydra. Hydra has a configurable noise threshold by RPM and will pull timing if noise is over the threshold. Also if it detects to many knock events (noise over threshold during a sample window) it will go to a limp dick timing map until key off and CEL will illuminate. Knocklite is just for additional info and it does actually work but you need to calibrate it properly. It's also a spiffy shift light. |
Originally Posted by Faeflora
(Post 698570)
Hard to do that when driving at WOT at 9 million mph with a 3" exhaust and a loudass turbo :(
http://www.amazon.com/Koss-Plug-Port...d_bxgy_e_img_b |
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Originally Posted by Faeflora
(Post 698574)
But then I can't hear my turbo and exhaust!
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Originally Posted by BenR
(Post 698490)
https://www.miataturbo.net/showthread.php?t=54302
Before that I used my ears and watched the oil pressure gauge. |
Originally Posted by Techsalvager
(Post 698579)
what did your oil pressure gauge do durning knock events?
The needle moves in unnatural ways. |
Originally Posted by JasonC SBB
(Post 698526)
Does anyone have some recent audio recordings of knock?
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I'll be running a older GM(Saturn) knock sensor on AEM EMS once the car is running again.
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Wolf EMS had some videos of det can audio on youtube but I can't find them anymore.
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Originally Posted by JasonC SBB
(Post 698842)
Thanks, are those from a miata?
The Knock Box and Phormula's KS-series are the only two I know of that offer bandpass filtering for the audio outputs. The Phormula KS-4 also has a 0-5V output to integrate with a datalogger, which makes things very handy. |
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