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Tiger Time => Girly Talk (1999 - 2006 Tigers) => ECU and Fuel Injection => Topic started by: DavidR8 on July 03, 2017, 02:46:40 AM

Title: Oxygen sensor bypass
Post by: DavidR8 on July 03, 2017, 02:46:40 AM
Having grown tired of lurching along in the 2000-3000 rpm range while in traffic on my '06 Tiger 955i I bought a O2 sensor bypass thingy.
Installed it this morning. 
In a word: wow. What a difference. Smoothed out the idle and no more lurching along. Smooth as butter in traffic. 50 kmph at 2500 rpm is completely smooth.
So good. Not sure why I waited so long!


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Title: Re: Oxygen sensor bypass
Post by: Chris Canning on July 04, 2017, 10:35:37 PM
I've had a long running love hate relation with my 02 spuffer because while it does what you say in the traffic kills the motor when your making an effort because it doesn't spin up with anything near the gusto it has with it removed.
Title: Re: Oxygen sensor bypass
Post by: Ossian on July 04, 2017, 11:20:16 PM
I've removed the lamda on mine as well, however, although the bike is running and starting just fine, I feel that I'm missing something. Should I have retuned, or done some start-up rigmarole to get the engine to self adjust or something ?
Title: Re: Oxygen sensor bypass
Post by: Bixxer Bob on July 05, 2017, 09:51:47 AM
Best approach is to reset the ECU by blowing in a clean fresh map using TuneECU then immediately fit the bypass thus locking the map in the clean condition.  It won't then tune itself to the optimum, but it won't hesitate as much either.
Title: Oxygen sensor bypass
Post by: DavidR8 on July 05, 2017, 03:06:00 PM
Quote from: Bixxer Bob on July 05, 2017, 09:51:47 AM
Best approach is to reset the ECU by blowing in a clean fresh map using TuneECU then immediately fit the bypass thus locking the map in the clean condition.  It won't then tune itself to the optimum, but it won't hesitate as much either.
That's exactly what I did. My bike is fresh out of the shop where the ECU was flashed.

There might be a slight difference in how the engine spins up however I'm willing to accept the trade off.


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Title: Re: Oxygen sensor bypass
Post by: Chris Canning on July 05, 2017, 04:22:25 PM
Quote from: DavidR8 on July 05, 2017, 03:06:00 PM


There might be a slight difference in how the engine spins up however I'm willing to accept the trade off.


And that's thats rub,I'm lucky having an early 955 it takes me around 5 seconds to fit or unfit the plug its just behind the engine block and over years have tried it any number of times when I've forgotten what it does but always go back to stock but for any one doing lots of traffic obviously an option.
Title: Oxygen sensor bypass
Post by: DavidR8 on July 28, 2017, 04:20:02 PM
Quote from: Chris Canning on July 05, 2017, 04:22:25 PM
And that's thats rub,I'm lucky having an early 955 it takes me around 5 seconds to fit or unfit the plug its just behind the engine block and over years have tried it any number of times when I've forgotten what it does but always go back to stock but for any one doing lots of traffic obviously an option.
Its far better in traffic especially two-up.


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