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Knock knock.... who's there? KR

Old Sep 28, 2006 | 12:34 PM
  #81  
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So let me ask this......

Will my truck perform better with 0* of KR at 8* total timing -than it did- with 3* of KR at 11* of timing?
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Old Sep 28, 2006 | 12:40 PM
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Originally Posted by Whippled 496
Yup, that intercooler is close to being bought. Another couple of weeks and i should have enough saved to get it. $1800 for a stupid intercooler.... .
Damn, that's expensive. But from the looks of it, it should definitely be worth it.

And due to those recent developments, I'm up to about 70% set on moving back to NoVa for a few years, despite the strict reckless driving laws and lack of radar detector legality. Look forward to meeting up with y'all when I do.
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Old Sep 28, 2006 | 12:42 PM
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What t-stat are you running?

pe enrichment still needs tweaking

Im attaching a timing table, might needs some adjustment in the idle area I just did that area so the polynomial would work right. You want to keep this general shape. Paste it too both low/high octane and go from there.
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Old Sep 28, 2006 | 01:25 PM
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Originally Posted by 02sierraz71_5.3
What t-stat are you running?

pe enrichment still needs tweaking

Im attaching a timing table, might needs some adjustment in the idle area I just did that area so the polynomial would work right. You want to keep this general shape. Paste it too both low/high octane and go from there.
Thanks Chris, by the way....instead of looking at this thing in notebook for 3 minutes like i did wondering what the hell kind of spark table this is.............uncheck "word wrap" in your settings of notepad...LMAO!
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Old Sep 28, 2006 | 01:50 PM
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Originally Posted by Whippled 496
Thanks Chris, by the way....instead of looking at this thing in notebook for 3 minutes like i did wondering what the hell kind of spark table this is.............uncheck "word wrap" in your settings of notepad...LMAO!
hit ctrl-a, then ctrl-c and paste it into the table that way you can see it.
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Old Sep 28, 2006 | 05:06 PM
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Sorry guys, cant do any logging tonight because of the rain. I will log the runs at the track tomorrow night though...
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Old Sep 29, 2006 | 10:45 PM
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Okay, things are lookin up. I didnt change any of the timing tables tonight other than my IAT table. I think maybe that filter needed time to adjust or something because the knock seems to be lessening more and more. I put a half tank of 93 in tonight overtop the 1/16 tank of 110. I did not see any difference in performance or in the tune/logs. I removed 7/10's off my E.T tonight just from adjusting the IAT table. I wanted to start very conservative and work my way down. First run was a 15.0@89. This was with different high/low octane tables and a heavy IAT table. Second run was a 14.7@91 with 25% of the IAT table removed. 3rd run was a 14.31@94 with 25% more of the IAT table removed and with the same timing in both high and low octane tables. I logged the 2nd and 3rd runs for review. I had some knock in the burnout section of the 1st log but after that i saw no more than 3/10's of a degree of knock in both runs. I do notice a little knock in the high RPM low load ranges when im just driving around casually, this may be a little tougher to get out. As far as WOT tuning is concerned, i think its just a manner of tweaking the IAT and spark tables. Not sure how to attack mid range tuning, any advice for that is welcome. Here are the 2 logs......
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Old Sep 30, 2006 | 01:08 AM
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Originally Posted by Whippled 496
I do notice a little knock in the high RPM low load ranges when im just driving around casually, this may be a little tougher to get out. As far as WOT tuning is concerned, i think its just a manner of tweaking the IAT and spark tables. Not sure how to attack mid range tuning, any advice for that is welcome. Here are the 2 logs......
Thats good stuff.

Im wondering why when you get .4kr it pulls all the timing and reads -5 hhhmmmm
nevermind its TM its pulling all the timing at shifts regardless of kr, if we could get rid of that I think youve got your 13 sec pass
Im wondering about the max torque settings under torque limiting
running 14.3 with slow *** shifts and no timing is huge if we could get rid of that there is 1/2 sec off.
I have messed with cutting TM from the trans tables on the allison and that bitch will shift like a built tranny its really amazing how rock solid it feels but after a month with 3/4 removed it started acting funny it would shift very hard when coming to a stop at a slow roll so I put it back in.

Pe is still acting slow

The knock sensors do have a learning factor thats why I say if kr shows up its more likely to show up again.
Id disable cat protection if you havent already.

Last edited by 02sierraz71_5.3; Sep 30, 2006 at 01:37 AM.
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Old Sep 30, 2006 | 02:39 AM
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Originally Posted by Whippled 496
Okay, things are lookin up. I didnt change any of the timing tables tonight other than my IAT table. I think maybe that filter needed time to adjust or something because the knock seems to be lessening more and more. I put a half tank of 93 in tonight overtop the 1/16 tank of 110. I did not see any difference in performance or in the tune/logs. I removed 7/10's off my E.T tonight just from adjusting the IAT table. I wanted to start very conservative and work my way down. First run was a 15.0@89. This was with different high/low octane tables and a heavy IAT table. Second run was a 14.7@91 with 25% of the IAT table removed. 3rd run was a 14.31@94 with 25% more of the IAT table removed and with the same timing in both high and low octane tables. I logged the 2nd and 3rd runs for review. I had some knock in the burnout section of the 1st log but after that i saw no more than 3/10's of a degree of knock in both runs. I do notice a little knock in the high RPM low load ranges when im just driving around casually, this may be a little tougher to get out. As far as WOT tuning is concerned, i think its just a manner of tweaking the IAT and spark tables. Not sure how to attack mid range tuning, any advice for that is welcome. Here are the 2 logs......
Sounds like you're finally making some headway.
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Old Sep 30, 2006 | 07:36 AM
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Originally Posted by dc_justin
Sounds like you're finally making some headway.
Yup, with the help of you guys im definately getting there. So how do i start getting rid of this mid throttle KR? I get KR in those areas when the ECT's and IATs are below 100*, so i know it has nothing to do with heat. Also, how do i get into PE quicker? I have the threashold set to 45 and the ramp in set at zero. How do i get ti to come in quicker? Cat protection is disabled.

I have looked and looked and can find nothing to do do with TM in the Allison TCM, is that where it is? I know its not in the PCM. I dont really want to mess with that thing, but i would like to understand it. Yea, the Allison shifts pretty slow, but i can adjust that and i can adjust the RPM shift point a little too, but like i said......i get a little weak in the knees fooling with that thing. I might go in and reset the TAP cells so it will learn again. I couldnt do that before, so the Allison had to adjust itself to the increased HP. maybe i will reset them and let it do a complete relearn.

I really wish i would have raised that timing a few more degrees for that last run. It held 13.5* just fine with no KR, i bet it would have held 15* too, that may have been my 13 second pass as well. Wait till i get that intercooler and i can keep those IATs in the 120*-130* range almost all of the time....i think 15*-16* timing at WOT might not be out of the question at that point.

So, i need to work on entering PE quicker and mid throttle KR now....cant wait to get this thing purring.
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