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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through June 22, 2009 » Would it hurt to run with O2 sensor still in but not hooked up? « Previous Next »

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Duggram
Posted on Wednesday, June 10, 2009 - 08:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sorry to keep pestering for information but I gotta know. If I can't get my rear O2 sensor out by end of day tomorrow, could I run this weekend with it still in but not hooked up?

The front came out easy. But the rear one is an SOB! In the morning I plan to unhook the rear shock, jack the bike up letting the swingarm fall. Hopefully this will give me the room to get that SOB out. I don't have time to do my first engine rotation before leaving for the track on Friday.
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Ponti1
Posted on Wednesday, June 10, 2009 - 09:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you take them out, don't you have to put something else in its place? I can't imagine it would hurt anything to leave them in and disconnected, since they're only activated for closed loop (certain RPM/TPS range)...Right?
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Skylerxb12r
Posted on Wednesday, June 10, 2009 - 10:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You will have no problems running with it unplugged. I have had mine unplugged for the last 3 months or so and can count on one hand the number of times i have seen the check engine light. I find it interesting that when i have seen the light come on is not when i would have expected, i.e. 80+ mph under fairly heavy throttle as opposed to light load cruise conditions.
I don't think i'll even bother with removing mine, they seem to work pretty well at plugging that pesky hole in the header!
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Zac4mac
Posted on Wednesday, June 10, 2009 - 10:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The sensor sticks into the pipe.
You should see a small increase in flow if you remove the sensor and put in a bung-plug.
We carry two different brands at the counter.

The closer to flush on the inside, the better.

Z
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Duggram
Posted on Wednesday, June 10, 2009 - 11:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Zack, I got some Moroso plugs with threads the same length. I'll be good if I can get that rear plug out.

My neighbor is a 20+ year motorcycle mechanic. He just told me that if I don't take them out and run with the electrical wire unplugged I run the risk of ruining them. Gotta get it out tomorrow.
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