Data logging a stock 2024 KLX300.

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Old May 20, 2025 | 07:32 PM
  #51  
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Good to see your WBO2 install - as I imagined from your written description, it seems to have added approx 1.5 inches to the midpipe length and is hopefully sized correctly such that exhaust flow is not impeded. So perhaps the mod will not alter the exhaust system tuning to any significant degree. Did you consider simply having a bung welded onto the stock midpipe ?

We need single gear runs at WOT to get usable data. Perhaps 3rd gear will allow a run up to redline cutoff ?

 
Old May 21, 2025 | 03:34 PM
  #52  
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Originally Posted by Klxster
We need single gear runs at WOT to get usable data. Perhaps 3rd gear will allow a run up to redline cutoff ?
I you look at the previous runs you will find WOT runs using 4th gear.
 
Old May 21, 2025 | 03:35 PM
  #53  
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Originally Posted by Olsen29
Yes. Simple as that. However I would consider a powerbomb header someday as a well as a quiet slip-on. Knowing I will not gain much there either.
If I get bored with it and run out of things to test, I may do the 402.
And then, it will still be a KLX. And to me that is a wonderful thing.
Do you have any curiosities I can help answer?
I'm running (on a carbed klx250) the 351 with stock exhaust and a powerbomb, plus a 3d printed airbox cover. I have not been able to find a slip-on with an acceptable volume level.

The difference is pretty astounding. Accelerating up steep hills in 6th still surprises me every time.

 
Old May 21, 2025 | 03:49 PM
  #54  
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Yes, the way I worded my post did not precisely convey my message.
So, let's try again:

The most useable data would be single gear WOT runs to redline cutoff.
The runs, so far, only reach the mid 8k rpm area.

Perhaps a 3rd gear run would allow such ?
 

Last edited by Klxster; May 21, 2025 at 03:53 PM.
Old May 21, 2025 | 03:53 PM
  #55  
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Originally Posted by Klxster
Yes, the way I worded my post did not precisely convey my message.
So, let's try again:

The most useable data would be single gear WOT runs to redline cutoff.

Perhaps a 3rd gear run would allow such ?
WOT part of the runs above is made on 4th gear. its 3000-9000 rpm. Am I missing something?
 
Old May 21, 2025 | 06:09 PM
  #56  
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Redline cutoff is still 10,500 rpm ?
 
Old May 21, 2025 | 11:21 PM
  #57  
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I don't think I would run it to 10,500 without a different ECU Or cams.
I pulls better in the next gear when you get the Rs back down to where the power is.
Without a programable ECU, I dont see the point.
 
Old May 22, 2025 | 02:40 AM
  #58  
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Originally Posted by Olsen29
I don't think I would run it to 10,500 without a different ECU Or cams.
I pulls better in the next gear when you get the Rs back down to where the power is.
Without a programable ECU, I dont see the point.
I was wondering if you had some philosophy that precludes running to redline.
The stock fueling on the stock ECU, from 3k to 10.5k is data we need and can use.
Peeps that mod (or want to mod) induction and exhaust on the stock ECU will need to know that top end fueling will remain safe.
 
Old Feb 12, 2026 | 09:36 AM
  #59  
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Default Small update... Big news coming

Parsed data.
Parsed data.
I finally, with some help have the logging results export from last spring.
I did this in prep for very near future testing.
There are approximately 8 more tables to define.
I will take no credit or share my sources just yet.
But interesting enough, I that I would share an update for all that were interested.
There are 8 main fuel maps.
4 Speed density (neutral, 1-2,3-4,5-6)
4 Alpha N (neutral, 1-2,3-4,5-6)
There is are big updates on the horizon.
"Stay Tuned"
 
Old Feb 12, 2026 | 06:06 PM
  #60  
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@Olsen29 , I'm trying to figure out if you've simply come into some info about the structure of the ECM programming OR if you are about to be able to reprogram the tables and flash the changes back to the ECM.... ?

Do you understand that your post indicates a blended EFI solution (Uses Speed Density for low performance ops, AND Alpha-N for high performance ops ) and, therefore, explains the need for 8 "fuel maps" ?
 



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