Burst knock and KR
#11
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Holy crap, I think mines at around .025 or something. I'm going to have to look into this burst knock thing, due to my 2000 PCM's ineptitude.
Oh yeah, what does the decay number reference? Is it a measure of time or something?
Oh yeah, what does the decay number reference? Is it a measure of time or something?
#12
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Originally Posted by dewmanshu
yeh email it to dewey@bowenelectric.net (me) and calliedusty@sbcglobal.net (Wilde Racing)
I'll host it for ya so other people can see it.
I'll host it for ya so other people can see it.
#13
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Originally Posted by vanillagorilla
Holy crap, I think mines at around .025 or something. I'm going to have to look into this burst knock thing, due to my 2000 PCM's ineptitude.
Oh yeah, what does the decay number reference? Is it a measure of time or something?
Oh yeah, what does the decay number reference? Is it a measure of time or something?
GM I am sure doesn't care if you have timing being pulled a little longer than we would desire. It's safer no matter how you look at it from their super comfortable all leather reclining chair in the corner window office on the 25th executive floor.
That's my take on it at least.
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What is your delta g/cyl at for burst knock? Also what exaclty does the delta g/cyl value correspond to? Is the difference in the dynamic cylinder over a certain interval of time? Can I get this displayed on a PID or something to log it?
#16
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Originally Posted by vanillagorilla
What is your delta g/cyl at for burst knock? Also what exaclty does the delta g/cyl value correspond to? Is the difference in the dynamic cylinder over a certain interval of time? Can I get this displayed on a PID or something to log it?
Whew, take a breath now. LOL I just made all of that up, sounds pretty good eh? LOL
Oh yeh, your first question, Shhh...I zero'ed mine out a month or 2 ago.Hush hush.
#17
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oooh if you look at GMC DUDE's tune, he has the extra table for engine run time. Mine doesn't.
GMC DUDE I don't see anywhere in your tables where it would pull 15*, even with the multipliers. Do you have a scan of this "timing pull" ?
GMC DUDE I don't see anywhere in your tables where it would pull 15*, even with the multipliers. Do you have a scan of this "timing pull" ?
Last edited by dewmanshu; 06-14-2006 at 12:37 PM.
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Originally Posted by dewmanshu
It's also supposedly only measured at throtle blade opening. So if you are already on the gas and haven't encountered it, you won't. But if the TPSis 0% and you nail it...the pcm is looking to see if those parameters are met to enact the prescribed bkr.
I'm going to head over to HPT's forums to see what I can dig up.
#19
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Originally Posted by vanillagorilla
I think it is based of the TPS too, but in my case it happens when I let off to shift. I guess I'm going to have to learn to power shift so I can keep the pedal to the floor.
I'm going to head over to HPT's forums to see what I can dig up.
I'm going to head over to HPT's forums to see what I can dig up.
I would imagine the only TPS basis it would use is open or shut. LOL
#20
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From what I have seen, too aggressive of a setting in your burst knock tables will actually cause false knock. I increased my deltra airmass tables up to something like 0.6, which effectively disable burst knock. Once I did that, I saw a lot less KR as well. I did this after posting in the EFILive forum (or LS1Tech, can't remember), as someone else was having the same problem.