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Evo 9 very reluctant to change

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Old Oct 8, 2012 | 02:58 PM
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Evo 9 very reluctant to change
Hi, I have this battle between my car and ecuflash. I tell it to run 11.5AFR and it doesn't I have to tweak the Maps beyond what I should to reach desired AFR. There is change but it isn't happening unless I get aggressive. What gives?
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Old Oct 8, 2012 | 04:09 PM
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From: Seekonk, MA
It is very important to note that the numbers in the load cells of the fuel map are NOT actual AFR numbers that you will log with a WBO2. Under no condition should you enter the AFR that you logged with your wideband into the fuel map. They are just numbers. The higher the number, the leaner the AFR, and the lower the number the richer the AFR.
Give this a read and it will give you some good info to start with:

https://www.evolutionm.net/forums/ec...-tune-evo.html

-Jamie
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Old Oct 8, 2012 | 04:33 PM
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I understand how to tune and how to flash Jamie but thank you so much. Re-read the thread please.
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Old Oct 8, 2012 | 05:30 PM
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From: Seekonk, MA
Well, first, you don't 'tell' the ECU to run a desired AFR. You have to 'tune' it for a desired AFR. You didn't specify where in the powerband the AFR seems to not be changing with changes to the fuel map. What do you consider DRASTIC changes? Is lean spool enabled or disabled?

-Jamie
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Old Oct 9, 2012 | 12:57 PM
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Do you mean the values in the fuel map and the wideband dont match up ?
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Old Oct 9, 2012 | 02:33 PM
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AFR values in the fuel map are not really "AFR" they are a visual representation of IPW
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Old Oct 9, 2012 | 05:28 PM
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I think he's just not seeing change with his fueling proportionate to his adjustments. Not the actual value not matching but the ability to get to a value is crappy. That is how I read it
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Old Oct 9, 2012 | 09:21 PM
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From: Seekonk, MA
Originally Posted by 211ratsbud
I think he's just not seeing change with his fueling proportionate to his adjustments. Not the actual value not matching but the ability to get to a value is crappy. That is how I read it
Yeah, that's what I gathered to second time around. Still waiting for his replies to my follow-up questions though.

-Jamie
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Old Oct 14, 2012 | 06:56 AM
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Jamie and 211ratsbud you guys are exactly right. Sorry it took me a bit to get back to this. I'm getting changes to my actual AFRs but it's just taking serious tweaks. Lean spool is enabled btw.

Basically she is running too rich and ECUFLash or the ECU is being a PITA.

211ratsbud, you at Ft. Drum?
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Old Oct 14, 2012 | 07:02 AM
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lean spool is being a pain in the ***
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Old Oct 15, 2012 | 04:56 PM
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lean spool is okay. see that's the thing. spool up is a-okay. past 6k is too rich.
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Old Oct 16, 2012 | 09:58 AM
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Originally Posted by superkizuna
lean spool is okay. see that's the thing. spool up is a-okay. past 6k is too rich.
then lean it out
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Old Oct 16, 2012 | 10:22 AM
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Maybe if you post a log and your rom we can take a look?
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Old Oct 16, 2012 | 02:09 PM
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Perhaps your fuel pressure is high!
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Old Oct 17, 2012 | 09:22 PM
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Originally Posted by superkizuna
Jamie and 211ratsbud you guys are exactly right. Sorry it took me a bit to get back to this. I'm getting changes to my actual AFRs but it's just taking serious tweaks. Lean spool is enabled btw.

Basically she is running too rich and ECUFLash or the ECU is being a PITA.

211ratsbud, you at Ft. Drum?
Nah Im a local civilian. FT drum is a couple mins away

you in po valley? lol
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