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hit a speed bump with tuning

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Old Dec 12, 2014 | 09:41 AM
  #1  
newbevouser's Avatar
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From: saint louis
hit a speed bump with tuning

here is where I am at.


I have done the Tephra mod version 7 with SD.


The car starts and idles perfect.
14.7-15.2 AFR with no knock. so I did something right......


I have done the big map conversion to timing, fuel etc... load 0-380


however here is what I notice today when I finally went to drive the vehicle and log.
While logging live it will show values that spread across all cells. 0-300load.


But when I review the log once it save. It will only show a load value up to 160.
Also it appears that it coincides with the same cells in the tune.


How come my pcm isn't using the full map?
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Old Dec 12, 2014 | 04:11 PM
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From: upstate ny
make sure your 2byte to 1byte load factor is the same in ecuflash as it is in evoscan. log 1byte
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Old Dec 12, 2014 | 04:15 PM
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From: saint louis
I am logging 1byte and my ROM has the 2byte to 1byte value of 1.2
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Old Dec 12, 2014 | 04:21 PM
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From: saint louis


say I should be in cell 300load at 3500 RPM in WOT condition I should have 9 degrees of timing.
Instead the vehicle is using cell 120load at 3500RPM and is at 20 degrees. So my ecu flash isn't using the whole Table.


Is this part of the byte load/rpm MUT table conversion that I should be doing?

Last edited by newbevouser; Dec 12, 2014 at 04:25 PM.
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Old Dec 13, 2014 | 08:07 AM
  #5  
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From: upstate ny
in evoscan is your 1byte function 1.2*x?
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Old Dec 13, 2014 | 09:41 AM
  #6  
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From: saint louis
Yep. Evo scan matched with ecuflash 's 2byte to 1byte load
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