Can you log knock sensor data?
#16
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Originally Posted by ZEUS+
That is great work !!! The rpm and knock spikes on time. Can you log ignition ?
I'm working on trying to get the MAF inlet temperature and vacuum/boost hooked up right now since I know how to gather those inputs. Once I figure out the math to set up the DL-32 to translate those inputs into data I'll move on to the injector duty and then ignition.
It might seem like redundancy since I have the SharkTuner and it does all this and much, much more but I don't think driving around with the SharkTuner permanently connected is practical and this will at least give me the ability to log some of the basics anytime with just the touch of a button.
The DL-32 has a SecureDigital memory card in it so you don't even have to have the laptop in the car, just push the button to start logging, then pop the SecureDigital card out and read the logs on any computer. Since I know I'll be tweakin' this car for a long time it's worth it to me to be able to quickly track of the effects of the changes I make to the car.
#17
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Hi Craig,
I have had an idea that might allow the data capture with the SharkTuner as you require (witout EPROM cable connected) but we will have to look into this further...
I have had an idea that might allow the data capture with the SharkTuner as you require (witout EPROM cable connected) but we will have to look into this further...
#18
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Originally Posted by John Speake
Tampa -
For an '86 there is no provision in the EZF for knock sensing. It would be a DIY system along the lines that Ken is pointing. The tricky bit is finding a way of applying a suitable amount of retard once the knocks are detected.
Craig,
It is a 5v signal.
For an '86 there is no provision in the EZF for knock sensing. It would be a DIY system along the lines that Ken is pointing. The tricky bit is finding a way of applying a suitable amount of retard once the knocks are detected.
Craig,
It is a 5v signal.
#19
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Cool..defintiely looks like knock.
Looks like the AFR is good at that point as well. ..and you are a ways into the RPM range also.?
Wheres the boost line?
Looks like the AFR is good at that point as well. ..and you are a ways into the RPM range also.?
Wheres the boost line?
#21
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Originally Posted by John Speake
Hi Craig,
I have had an idea that might allow the data capture with the SharkTuner as you require (witout EPROM cable connected) but we will have to look into this further...
I have had an idea that might allow the data capture with the SharkTuner as you require (witout EPROM cable connected) but we will have to look into this further...
The SharkTuner has everything in it's logs. Could you include the EZK with the LH data? That would be, to borrow from the Guinness guys, Brilliant!
Keep me informed and thanks again!
#22
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Originally Posted by Tony
Cool..defintiely looks like knock.
Looks like the AFR is good at that point as well. ..and you are a ways into the RPM range also.?
Wheres the boost line?
Looks like the AFR is good at that point as well. ..and you are a ways into the RPM range also.?
Wheres the boost line?
#23
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Originally Posted by Fabio421
How about using the knock sensor to control a two stage boost controller or something similar. They use a vacume line from manifold as their signal and allow a certain amount to "leak" to control boost. Couldn't you also use this type of system to retard ignition by hooking it to the vacume advance of the distributor and defaulting to the lower vacume level (more leak) when the signal from the knock sensor hits the controler? It may take some tinkering but I think it could work. I am assuming that an 86 has a vacume advance on the distributor. I know my 84 and 78 do.
The 85/86 doesn't have a vac contolled distributor, but does have a vac feed to a MAP type sensor inside the EZ-F. So you may be able to use that. I haven't checked the control range in crank degrees of that part of the system yet.
#24
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If there's no vacuum to the EZ-F MAP, disconnected/WOT, the max retard is 20°.
#25
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Well, that's a usually potential range of adjustment. However I hope we will be able to offer remapable igntion advance/retard for the EZ-F ECU is due course.
#26
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I see what you meant, now - the range of the timer circuitry that's programmable.
#27
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knock sensor
Originally Posted by John Speake
Hello Glenn,
The signals from the transducer are quite low level (couple of 100mV), and you also need filtering to wipe out all the other noise the transducer will pick up. The knocksense box that Ken has shown does these things.
But what are you going to do with that processed signal ? Control what ?
The signals from the transducer are quite low level (couple of 100mV), and you also need filtering to wipe out all the other noise the transducer will pick up. The knocksense box that Ken has shown does these things.
But what are you going to do with that processed signal ? Control what ?
Glenn
#29
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Hey guys, I was going to try hooking this up this weekend, but then I realized that John gave the pinout for the 88. Does anyone know what it is onthe 89+ diagnostic plug? There used to be a diagram floating around with the pinout (IIRC) but I cannot find it.
#30
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Update: Herr Speake sent me a PM telling me that the knock sensor data should be able to be logged off of Pin 19 ont he round diagnostic plug. We'll see if I can get it to work this weekend.