Official DynoJet 02 Eliminators
 

Simon Cope of Powertech UK has just phoned me from the Bike Show and said he managed to secure 10 x 02 eliminators for the XTX / XTR / XTZ.



Now the bad bit.... they cost..... including free delivery... �87.00!!

If you want one... call Simon on 07899 771 944

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Well Kev beat 'em to it!!

.....and I have only just bought one of the limited initial batch from Kev for �50.10 delivered.....so it looks to me like my new Renthal Handlebars at �37 came for free, by getting Kev's one.
Nice one Kev, thanks mate!:icon_thumleft:

Simon does do the best uk deals on Power Commanders....I can vouch for that.

I suppose some peeps would want the branded product, and I'm sure Simon will sell them quickly.

I might have got it wrong or Simon might have told me wrong, he said all xt 660's

I've just deleted the post.

I've spoke to Simon and it's for the bikes with the new ECU and lamda probe in the exhaust (I think I've got that right). So any of the 3 models, but the best thing to do is to call Simon if you have any questions. I've dealt with him before and he is a top bloke.

I know that Simon has had these on back-order for ages.....as I have discussed it with him ages ago.

If you have an XTZ and are thinking about getting one, I would just go for it, as you might be waiting a while for the next batch...............

Nice work Dynojet. I would love to see what they did on their O2 eliminator & how it works.

Simon, I would expect the guys would have to get a new fuel map as well? Once you have made a map up with the O2 eliminator please can you send me a copy to have a look at.

I should have pictures and more info by the end of the day.

I'm at the Excel show at the minute so if anyone is coming to the show please come and see me, stand N54

Simon.

Nice work Simon, thanks for keep us up todate.:bbq[1]:

Just been at the show and met with Simon, he said to forget about that problem with the power commander serial number it is no longer required.

Which means if you want to buy the official DynoJet 02 eliminator you can just contact Simon at Powertech as per the contacts on his website here:

http://www.powertech.uk.com/

Forgive me for being dumb, but isnt that just an exspensive kev mod?

Nothing dumb at all mate,

Ok Kev has only just finished to design his own 02 Eliminator and of course it is cheaper than DynoJet's one. But this is not the Kev mod we are talking about, this is the 02 eliminator a totally different device designed to stop the ECU self correcting the fuelling even with a fuelling device such as a power commander or a Kev Mod.

I don't think that Dynojet and Kev came up with the same solution...from the sound of it.

Kev's mod totally eliminates the O2 Sensor, but I'm not sure how the Dynojet one works.

With Kev's, you need to program in some fuelling, to make it run nicely. You can also custom map the fuelling in that area, where the O2 Sensor was. This is very useful if you run Cans, or DNA Filters, and High Desert Dyno Engines! (as you have just removed the O2 Sensor). And if you ride on the Trail, or in traffic in stop/start scenarios.

If you don't need a PC (Power Commander) for the Dynojet one, then you don't need to program in any fuelling at the area where the O2 Sensor did work. And the fuelling is controlled by the ECU. (a Power Commander overrides the ECU, and adjusts the "default" fuelling)
So, isn't that going to be the same as their last O2 Eliminator???? (that didn't work....but it took them a long time to withdraw it from sale...all it did was stop your warning-light coming up on the dashboard.)

You can just disconnect your 02 Sensor, and run your bike like that......but I'm not sure if it will do your engine any good in the long run.

I would be interested to hear how the Dynojet one fits.......someone buy one. You must need to program some fuelling in, surely?

..but what I can tell you is, Kev's one works.

ok then so in theory i could have both a kev mod and a 02 eliminator right?

http://www.pdroms.de/media/upload/im...hone_misc).jpg

Is that a yes then :)

Half right.

My O2 mod completely turns off the O2 sensor, the ECU stays in the open loop state, you need a Power Commander to adjust the fuel map.

The New Dynojet O2 controller is a device that sends signals to the ECU in the closed loop circuit, you still need a Power Commander to get the fuel map right. My fuel mod is untested with this O2 controller.

is it called the closed loop when the engine is up to temperature?

Open loop = The ECU runs off a predetermined map at all temps, you can adjust the fueling using a Power Commander or like device with no problems to the desired 13.2:1 that we know the XT likes.

Closed loop = the ECU takes readings from the O2 sensor & adjusts the Air/Fuel ratio back to 14.7:1 & over rides the any & every fueling device. The closed loop circuit normally comes on when you are on the cruise or light throttle openings.

So my O2 mod turns off the closed loop circuit completely so we have full control over the mapping & can keep the A/F ratio at 13.2:1 all the time.

The Dynojet O2 controller does not turn off the closed loop circuit it sends false information to the ECU in the closed loop circuit so it thinks it lean, but actually it is what ever A/F you have set the Power Commander to.

I will get one to test it sometime soon.

Has anyone bought a Dynojet one yet?

I sold one on Thursday so it should have arrived with the customer by now.

yip, with your service mate!

so can you tell us anymore about it? or is it a case of its so new, you don't know much more about it?

BTW...i saw some pics of your stand at the show, those new cans look cool. (!)

Since i have the Rapid bike 3 installed , will this mod work one my xt ?

You can not buy one unless you give your serial number from your Power Commander when ordering.

My new O2 mod will work with a Rapid bike 3 ECU.

Great kev , keep me posted when its out

My new O2 mod has been out for the past few months.

http://www.xt660.com/showthread.php?t=14746&page=8

They can be bought from here.

http://cgi.ebay.com.au/XT660X-XT660R-XTX-XT660-O2-Eliminator-Yamaha-/130490613020?pt=AU_Motorcycle_Parts_Accessories&ha sh=item1e61d8bd1c

A bit more info on what the new dynojet O2 controller actually does. I would like to thank Martin at Dynojet UK for sending me this information.

The new style O2 optimise's have just been release, part no 76125028.

These work a little bit different to the traditional O2 eliminators, in that they work in-conjunction with the stock O2 sensor, not disabling it. In effect the bike still runs closed loop in the lower throttle openings, however rather that aiming for 14.7:1 AFR the optimiser trims the signal and forces the bike to aim for 13.6:1 AFR in its closed loop area.

This is a great device for most bikes, but if you want to map your bike around 13.2:1 A/F ratio where we know the XT produces it's most HP then this mod will be lean in the closed loop circuit at 13.6:1, so in effect the fuel map will run rich then lean as it switch's between closed & open loop circuits. If your bike is mapped at 13.6:1 the fuel map will be perfect & run smoothly.

My New O2 mod completely turns off the closed loop circuit so you can map to any A/F ratio, with the ECU forced to stay in the open loop all the time.
:partyondude:

I know which one I'd buy....Kev's is far better:bunny:

Dynojets' one seems to have REDUCED the surging, but not eliminated it (is that right?)........and you can't map where you want for optimum fuel economy or performance either.

It's nice to know the facts & to have a choice.

It is funny that Dynojet made this eliminator that actually will work good without any need for power commander but they sell it only for PC owners

Has anyone tried changing the AFR with these?

On the instruction sheet that came with it they mention to call the support number if you wish to change the AFR, so i wandered if it would be better with the same one Kev uses in his mod?

Cheers