Why am I getting so much KR?
#1
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From: Austin,TX Name:Mark
Sorry guys for so many questions in this thread lately. I've been getting alot of help from Nonnielesman on my tuning.
I did a log file today for my truck and I was getting a ton of KR as soon as I hit 5k rpms. Why would this happen?
Let me ask you if this might make a difference?
I filled up with WALMART 93 octane so I was thinking maybe I got some bad gas. I did notice quite a drop in MPG on this tank of gas.
If anyone has the time to look at it, I'm gonna try and post my log file. Thanks a bunch
I did a log file today for my truck and I was getting a ton of KR as soon as I hit 5k rpms. Why would this happen?
Let me ask you if this might make a difference?
I filled up with WALMART 93 octane so I was thinking maybe I got some bad gas. I did notice quite a drop in MPG on this tank of gas.
If anyone has the time to look at it, I'm gonna try and post my log file. Thanks a bunch
#3
Originally Posted by nightrunner
i dont know anything about tuning but you might tell us what kind of truck you have and what is done to it
try pm'ing Whippled 496 he has lots of problems with KR
try pm'ing Whippled 496 he has lots of problems with KR
#4
Looking at that log, first thing you need to do is change table B6207 (Knock retard recovery rate)to something like 0.5. This will make that KR show as more of a "spike" instead of a long trail. You want the KR instances to look more like stalagmites instead of waves. Quick spikes are what you want the KR to look like. Change that table then make another log so its a little easier to read whats going on. Then throw in a copy of your tune. Plenty of smart people here to give you a hand, they helped me a bunch.
#7
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From: Austin,TX Name:Mark
Originally Posted by 03sierraslt
I tryed looking at your log but it didnt work for me, are you using HPT?
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#8
Hey man...
Let me get it right, your truck is a 1999? You have the 2002 PCM in there right now?
i was told, it is possible that with Shell 93 you can get some pinging, and Chevron is just about the best. So next time pass the walmart and find you a Chevron.
i have no clue about what you are seeing. it just jumps to 8KR.
Let me get it right, your truck is a 1999? You have the 2002 PCM in there right now?
i was told, it is possible that with Shell 93 you can get some pinging, and Chevron is just about the best. So next time pass the walmart and find you a Chevron.
i have no clue about what you are seeing. it just jumps to 8KR.
#9
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From: Austin,TX Name:Mark
yea I'll try some better gas. I'm pretty sure it may have just been the shitty walmart gas. Other than that, everything feels great, shifts are perfect at 6000.
And yes I have a 1999 with an 02 pcm in it. Would that make a difference?
And yes I have a 1999 with an 02 pcm in it. Would that make a difference?
#10
Not sure how to fix your problem but i run shell 93 in my truck and with it lean as hell right now i don't get any KR at all.Unless i do back to back runs/logs then i get around 1.6 or so for a brief period in thrid gear over 100mph.



