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Change knock sensors while I'm in the area?

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Old Aug 15, 2009 | 09:51 PM
  #31  
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All i did was richen up your tune cause your lean as hell. I did that by adding 5% to the lower part of the MAF table and then i added 10% to the upper part (WOT)... And i added 2.5% to your VE table


go try it real quick.
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Old Aug 15, 2009 | 09:52 PM
  #32  
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ok

THANK YOU.
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Old Aug 15, 2009 | 09:54 PM
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sure, once you post up the new log i will show you a few things...
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Old Aug 15, 2009 | 10:19 PM
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hmm not so good. A lot of KR again, and also I felt a jolt in the truck around 4500-5000 rpms
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Old Aug 15, 2009 | 10:37 PM
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Originally Posted by GMCtrk
hmm not so good. A lot of KR again, and also I felt a jolt in the truck around 4500-5000 rpms

Well, apparently it wants more fuel... Your trims are doing good they got a little better... BUT You really need to tune the VE table first then do the MAF... Your expecting the stock tune to run correctly on a modified motor, is kinda insane... You increased the compression by a full point, the stock tune is not going to work...

You either need to get a wideband and start tuning with it or start tuning with your trims.


What octane gas are you running?
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Old Aug 15, 2009 | 10:40 PM
  #36  
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Are you confident in saying that my problem is in the tune and not something physically wrong?
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Old Aug 15, 2009 | 10:44 PM
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how long ago was it that you bought efi live and still haven't got a decent tune in there? you really should just pay justin to do it and be done with it. just sayin...
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Old Aug 15, 2009 | 10:45 PM
  #38  
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Why havent you tuned the truck if you have the software, and have had it up and running since the spring?
Your asking for trouble running that motor with the stock tune with the raised compression and all...
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Old Aug 15, 2009 | 10:47 PM
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Because today was the very first day I had the time to change the intake manifold gaskets. Justin told me I had an air leak so I needed to work on that before any tuning issues. Also, I did pay Justin for lifetime tuning. I did not buy the software to tune myself, I bought it so I can monitor my truck and figure out what's going on if it does throw a code. I really dont have the time to learn all the tuning right now, but in the future I would like to.

blackGMC, what table is the MAF fueling?
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Old Aug 15, 2009 | 10:48 PM
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Also I don't know why this was changed but, set B4105 - Set every cell to 450, you could try adding another 5-10% to the top half of the MAF table 5000hz+
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