O2 sensor eliminator

[renagade]

Well guy's this surging is getting on my nerves now and I think ao=part from a tuneecu I have read good results from a  O2 sensor eliminator. Have any of you guy's used one and did it help with the slow throttle surging?????

[Bixxer Bob]

I already replied to your PM, but I've tried the eliminator and it didn't work for me but to be fair I didn't know what I was doing then.  AS I said in my reply, if you have the right stock tune, do the 12 minute tune to reset your trims and then fit the sensor you are givign yourself the best chance for it to work.  If not I have a good map I'm using at the moment...

[Patman1200]

I've been riding my 2001 955i with the Lamda sensor disconnected entirely for over 5 years now and never had a problem. No low rev surging and no loss in performance or MPG and no engine light.

[Bixxer Bob]

No MIL Light???  That's the whole point of the eliminator, to stop the fault being logged.

Did you disconnect it?  Or was it already done?  I read that instead of the eliminator you can just fit a 300 ohm wire-wound resistor across the plug when you disconnect and that works too.

[Patman1200]

Yup no MIL light and just disconnected the O2 sensor from the wiring harness.
What with mine not firing on cylinder 3 with no MIL lights I am wondering if I have a pre-production engine firmware with hardly any failure messages built in. The last time it saw a main dealer was the day I bought it in July 2001.

[Bixxer Bob]

Yup no MIL light and just disconnected the O2 sensor from the wiring harness.
What with mine not firing on cylinder 3 with no MIL lights I am wondering if I have a pre-production engine firmware with hardly any failure messages built in. The last time it saw a main dealer was the day I bought it in July 2001.

That would make sense, but even so, you've proved it's not electrics or compression so it has to be fuel.

For what it's worth, I wouldn't start messing with the firmware if it was running well before this problem, you'll end up chasing your tail like a lot of folks on here.

Are the valve clearances ok?

[Chris Canning]

With me having a very early 955 it means that I stop the bike fit my 02 sensor and be back on the road within seconds for a direct comparison,it does stop the surging but flattens the motor to much for me.,and I haven't tried it with this new tune,it's normally in the pot by the phone with the loose change  :oops:

[ChazzyB]

Misfiring? You ain't had misfiring like I had last week in the Alps. MIL light? Sheesh, what's that!