O2 sensor eliminator needed?

[Danzano]

Hi guys,

I'm currently awaiting a juice box pro but I know the o2 sensor in my headers is a narrow band and will try re adjust outside the map I set in certain parameters. Should I get an o2 eliminator to avoid this or because it's a small spectrum it's effecting not worry?

I have also done mods to the air box and removed sub throttle plates and have a full two brothers exhaust system and blocked off the pair valve.

Reason for considering the o2 eliminator would be those mods and a couple others I'm planing.

Any thoughts views or help appreciated guys thanks

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[the oldstuff]

For the relatively low cost of an eliminator I would use one, then theres no wondering what (power/torque) might have been.
Sorry I don't know the specifics of your bike to comment intelligently.

[Danzano]

It is cheap but I'm unsure whether or not it's necessary will see if anyone else has any thoughts but thanks for replying :-)

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[mossy1200]

I have a 2012 zx14r eliminator new at home. I have reset my ecu to not read the o2 so if its a match let me know.
Might need see if the oem is the same part number to find out.

http://www.ebay.com/itm/251252937539?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

[pete-blen]

The ECU is looking for a verying voltage signal ... replaceing that signal with a
constant voltage.. after a few mins the ECU sees this as a corrupt signal then constantly
switches the A/F up and down.... It all comes down to controling the open loop fueling circut..

The unit on my XTR controls the voltage.... fits beween the o2 sencer & the ECU...and the bike
remains in a tuneable state.... because the ECU still has all the bits to the jigsaw puzzle it needs
for a complete picture...


Even Dyna jet pulled there eliminators off the market...

But these $20 chinese plug in wonder resistors .. just sound to good to pass up on..
Thats all it is... a 10c plug fitted with a 10c resistor....

[Danzano]

So the eliminator would cause it to drop into a closed loop state in that case so leaving the o2 sensor in would be better for tuning in that scenario unless you could perfectly map all conditions under closed loop right?

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[The Reibz]

Find the 5v signal pin on your ecu plug for your sensor and pull it. Run a wideband with your new unit and your good to go

[Danzano]

If I pull that pin it triggers an fi fault code and the ecu drops into limp mode with ignition retarded and running rich as to avoid damage. The other modes j and n run off the current o2 sensor and tps sensor, airbox sensor speed sensor and crank sensor are used also but not to the same extent as the first 2. I need to keep it between j and n by either like you say replacing current o2 with wide band or tricking the ecu, however an eliminator I'm guessing would read as an incorrect perfect reading after awhile and drop it into limp mode to so wide band or tunning closed loop are now the only options. Will do a little More reading see what else I can dig up but I think you guys are right :-)

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[nzspokes]

A Busa will fix it.

[The Reibz]

If you brought from dynojet you would have got a eliminator with your unit. They supply everything.
Like I said your best option is to pull the pin. Then run the tune over the top of the retarded mode, essentially all your unit is doing is taking a pulse signal from the ECU and modifying it by a +/- percentage before it reaches the injectors. If the sensor is disabled (by pulling the pin) the ECU can't enter a closed loop mode.

Don't know why you didn't buy dynojet man, all NZ operators should be familar with the software and how to install them and the 2013 models come with full ignition timing control negating the need for a multi process hub and seperate boxes

[Danzano]

Two reasons one its cheap and two the stock unit can advance or retard the ignition 15° so until I can afford the high compression pistons modifying the afr is all I need. Also the juicebox pro can do that we'll enough for just under half the price of a pcv with out ignition timing feature. I might look at the pcv eventually but until I reach the mods to justify it the juicebox is good. Hey may even switch to a bigger bike by then who knows :-)

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[pete-blen]

modifying the afr is all I need.

Is that all yer want.... Thats real simple.... I can adjust the A/F ratio at the turn of a nob on the XT660R...
Yer just have the air box temp sencer tell lies to the ECU about the air temp.. tell it the airs hotter it will
lean the mixture / colder it will richen the mixture... yer put a 1 ohm pentometer in the air box temp sencer wire..

just like that down there...

[Danzano]

Dude that is very very cool!!! :-) unfortunately I do not posses such ingenuity

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[Danzano]

Well guys turns out the O2 eliminator was an awesome idea!! After two days of mapping I finally have the bike where I want it and it feels like a completely different bike all together. Maybe not much more horse possibly 2-3 but a hell of a lot more of it smoothly meeting the road. Will update after a good week or so of riding maybe even do a review thread.

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[The Reibz]

but can it run 11 seconds?

[Danzano]

Haha probably not reibz but if I finish my mods save up and get it mapped properly at a dyno maybe flat 12 high 11 :-D

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[The Reibz]

You just worry about running 11's, I will worry about keeping my shit shinny side up and the braking area hahaha
Good to hear you are getting your head around tuning, what are you using to measure the AFR?

[Danzano]

You just worry about running 11's, I will worry about keeping my shit shinny side up and the braking area hahaha
Good to hear you are getting your head around tuning, what are you using to measure the AFR?

Lol hopefully it will get there eventually

At the moment I'm using the map provided by 2 brothers for that exhaust system then richened it up by I guess about 5% for the airbox mods I've done and the sub throttle plates being out etc so staying on the rich side rather than lean which is were I think it was with the stock map

I really should measure it properly but seems good for now way better then it was at least

Afr gauges and widebands are expensive as and I can't afford them or a dyno at the moment

Will be saving to do it though :-)

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