last few logs got kr when giving gas at stand still?? what to do?
07-10-2005, 01:36 PM
#1
last few logs got kr when giving gas at stand still?? what to do? ive never had to deal with this. i dont know if its burst knock or what but i give the car gas at idle, i only gave it about 20% throttle max and i got 4* of kr in just one cell on the log export in excel and then nothing, it did this to me the other day. what give? and how do i know if this is programed knock or real knock, let me know i dont like knock so i wanna fix it lol
07-10-2005, 02:08 PM
#2
this was also an abrupt change in throttle, i have a new timing table but the values are all within +/- 1.5 of stock but in the range i got the knock they are the same
sometimes i get it sometimes i dont, in another log i got it with 32% throttle fast and an abrupt change in MAP. it just doesnt see it all the time. i dont get it really. ltfts are turned off so i dont know if that has to do with it, maybe lean spot in fueling...any help?
sometimes i get it sometimes i dont, in another log i got it with 32% throttle fast and an abrupt change in MAP. it just doesnt see it all the time. i dont get it really. ltfts are turned off so i dont know if that has to do with it, maybe lean spot in fueling...any help?
Last edited by WS6FirebirdTA00; 07-10-2005 at 02:16 PM.
07-10-2005, 02:38 PM
#3
and another thing,
reading about burst knock, it says at the prblem area of 1200 rpms it pulls out 8 * if hte delta air is exceeded. well why would i only get 4 then? and the other day i got 2.7 and 2.7, its weird and i dont get the tables too well
the one that i got 4* if it just went 0, 4, 0 and the other time it went from 0, 2.7, 2.6, 1.4, 0 or somethign like that, it decayed.
reading about burst knock, it says at the prblem area of 1200 rpms it pulls out 8 * if hte delta air is exceeded. well why would i only get 4 then? and the other day i got 2.7 and 2.7, its weird and i dont get the tables too well
the one that i got 4* if it just went 0, 4, 0 and the other time it went from 0, 2.7, 2.6, 1.4, 0 or somethign like that, it decayed.
Last edited by WS6FirebirdTA00; 07-10-2005 at 02:45 PM.
07-10-2005, 07:59 PM
#4
Staging Lane
Join Date: May 2005
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
You only made changes to the high octane table and this occurred? Have you tried collecting misfires as well to see if there's a correlation or maybe one cylinder registering more? Log knock learn factor too. There is a definite ramp/decay to knock that you can adjust if it's false knock like mine was. You can also adjust per cylinder, but that's jumping ahead at this point. What if you put the old tune back--does it go away?
07-10-2005, 08:24 PM
#5
ill try that, but i dont think this is an agressive timing tune at all, the most part throttle timing i have more than stock is like 1.5 but not even in the areas it happened. so i think its something else. i raed that a dip in the o2s could be a lean ve table so i am thinking it could be a ve table that needs more adjusting. could that cause this to happen? and not even happen consistent?
07-10-2005, 08:53 PM
#6
this is 800-1600 rpm, the difference from what is in there now to the stock settings, i will try to get all the numbers that are over 1 down some more to see if that will help but i figured with the cam 1 deg wouldnt do much, but might help it out...
0.3 1.0 0.6 -0.4 -1.3
0.3 1.0 0.5 -0.6 -1.5
0.1 0.7 0.1 -1.1 -2.1
0.3 0.8 -0.1 -1.8 -0.1
-0.6 -0.4 -0.7 -0.7 -0.3
0.9 1.1 0.6 0.7 0.3
0.2 0.3 1.3 1.2 1.0
0.1 -0.6 1.2 0.7 -0.4
-1.4 -1.0 0.1 -0.2 0.9
0.0 -1.6 0.7 -0.4 0.0
1.4 0.4 -0.2 -0.9 0.7
gets pretty weird cause i smoothed it all out and pretyt much did the whole thing by hand
0.3 1.0 0.6 -0.4 -1.3
0.3 1.0 0.5 -0.6 -1.5
0.1 0.7 0.1 -1.1 -2.1
0.3 0.8 -0.1 -1.8 -0.1
-0.6 -0.4 -0.7 -0.7 -0.3
0.9 1.1 0.6 0.7 0.3
0.2 0.3 1.3 1.2 1.0
0.1 -0.6 1.2 0.7 -0.4
-1.4 -1.0 0.1 -0.2 0.9
0.0 -1.6 0.7 -0.4 0.0
1.4 0.4 -0.2 -0.9 0.7
gets pretty weird cause i smoothed it all out and pretyt much did the whole thing by hand
07-11-2005, 09:14 AM
#7
Staging Lane
Join Date: May 2005
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
When correcting my false KR and watching misfires (after corrected) I found it helpful to look at the O2 mv, MAP, advance, and injector values in the cells where KR was present. Any and everything to feel confident it was false KR before desensitizing. Since this is part throttle KR it's possible you're chasing the edge of transients in those areas of RPM/MAP. Sorry I don't have any fast answers for you, but I'll help any way I can and hopefully learn a thing or two.