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.: XT660.com - The #1 XT660 Resource :. ( https://www.xt660.com/index.php)
-   XT660Z Mods ( https://www.xt660.com/forumdisplay.php?f=165)
-   -   Kev's O2 Controller on the T�n�r� ( https://www.xt660.com/showthread.php?t=20381)

Pleiades 10-11-16 23:10
Quote:
Originally Posted by teotyre (Post 226495)
OK thanks Pleiades.

I need some help...

I am trying to catch a signal from the o2 sensor with an oscilloscope.
I probe the grey cable on the ECU plug but I get strange signal. Is this the right cable?

I am working on a mod to keep the ECU in open loop and I want to check the AFR (not AFR but lean or reach) by probing the o2 sensor.

Thanks
On the ECU side of the loom:

Grey = signal (ground)
Grey with green trace = signal (+)

On the O2 sensor side:

White = signal (ground)
Blue = signal (+)

teotyre 10-11-16 23:31
thank you very much Pleiades.

teotyre 15-11-16 20:30
I have a question...

Do you think that we should use a CR6E spark plug for these mods?

thanks

Pleiades 16-11-16 00:13
Every variation of fuelling setup I have tried, both with PCV and Kev's mod, has worked perfectly well with a spark plug of the stock recommended heat range (7). I see no reason to go to a hotter (6) or a cooler (8) unless you've radically altered the motor, the fuel used is of poor quality, you're over/under fuelling and/or you're bike isn't running right in the first place. Even if you do feel like trying something different/fancy, it's always best to start with a stock copper core #7 plug to get yourself a baseline from which to work.

teotyre 16-11-16 08:27
Quote:
Originally Posted by Pleiades (Post 226627)
Every variation of fuelling setup I have tried, both with PCV and Kev's mod, has worked perfectly well with a spark plug of the stock recommended heat range (7). I see no reason to go to a hotter (6) or a cooler (8) unless you've radically altered the motor, the fuel used is of poor quality, you're over/under fuelling and/or you're bike isn't running right in the first place. Even if you do feel like trying something different/fancy, it's always best to start with a stock copper core #7 plug to get yourself a baseline from which to work.
ok thanks, but why copper core? I thought the iridium would be better...


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