• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

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EFI settings with/without O2 sensor on a TE250

Alberto

Alberto

Husqvarna
AA Class
My TE250 came from dealer without the O2 sensor on the pipe.. and it is powered up, however, I am not happy with the low end and want to check how can I change the performance putting in the O2 sensor and loading another EFI configuration/map.

Will the O2 sensor with any map out there can improve performance or is it better if I keep it like it is now without sensor and the actual map(i dont have any idea of the loaded map)

Any suggestions/recommendations on this?
 
If you reinstall the O2 sensor you will need to remove the jumper that is in the harness where the O2 sensor plugs in. Removing said jumper will revert the ECU back to stock settings(not gonna be good) The OEM ECU is locked so you either need to buy an after market programmer like the PCV or JD to remap the fueling. Do you know if you still have the OEM ECU installed or did the dealer upgrade it to the TXC or? More info would help us help you.
 
Your bike is in power up mode.

If it does not run well you will either have to adjust it with I-beat or buy the 12pt injector and ECU.

I have a '10 Te250 powered up with stock 4pt injector Ti pipe with spark arrestor and it runs good at 101 104 103.
 
reveille said:
If you reinstall the O2 sensor you will need to remove the jumper that is in the harness where the O2 sensor plugs in. Removing said jumper will revert the ECU back to stock settings(not gonna be good) The OEM ECU is locked so you either need to buy an after market programmer like the PCV or JD to remap the fueling. Do you know if you still have the OEM ECU installed or did the dealer upgrade it to the TXC or? More info would help us help you.
Click to expand...

I am not 100% sure, but I dont think my dealer upgraded ECU and injector.. it has the stock one, but flashed with the power up mode or whatever map it is.. dont know which one to be honest..
 
R_Little said:
Your bike is in power up mode.

If it does not run well you will either have to adjust it with I-beat or buy the 12pt injector and ECU.

I have a '10 Te250 powered up with stock 4pt injector Ti pipe with spark arrestor and it runs good at 101 104 103.
Click to expand...

where can I buy the Ibeat and how friendly is for someone without much mechanical knowledge?
 
The ECU can't be flashed with a new map like the new red heads can. Using the iBeat you can only adjust a few co settings and reset the TPS that's it. It's really easy to use but costs about $300 for the cables software and adapters. A 250 isn't going to have much power off the bottom, it will need to rev up a bit like a 2t. These bikes have no flywheel effect and a very short stroke by nature they want to be revved out.
 
Alberto said:
I am not 100% sure, but I dont think my dealer upgraded ECU and injector.. it has the stock one, but flashed with the power up mode or whatever map it is.. dont know which one to be honest..
Click to expand...
You can see the injector yellow is the old one green is for the txc.
 
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