O2 Eliminator
 

We have just received some advanced information today regarding the O2 Eliminators.

Please read below.

DynoJet have stopped making them as they have realised that according to them this 02 eliminator does not work on the 07 & 08 bikes with the lambda probe. He told me that now all PCIII for the 07 and 08 models comes with a warning that people must just disconnect the Lambda probe and not map the fuelling around the 2K mark (I think he means the rev rage of 2000 revs) The fault comes not from the Lambda but from the ECU fitted to the 07 & 08 bikes which causes them to surge. DynoJet has reported this fault to Yamaha and they think that Yamaha might reprogramme the ECU's to rectify the problem, however Simon doesn't think they will do and suggest that all Dyno testers must keep this in mind when designing a map for these range of bikes.

Freez & myself will carry out some tests soon. If the O2 Eliminator is not at fault, I cant see why they no longer what to fit them. I know the software is not right in my 07 model, I reported this on my last dyno run as I can't get my air/fuel ratio perfect in lower rpms. It is not bad I would say 95% perfect.

We will amend the necessary threads relating to this O2 Eliminator.

well thats weird, after i asked you about it yesyerday, i will await the results with anticipation....

I have a 08 xtx and have just fitted a pc3 does this mean the 06-07 maps won't work properly ?

Cam147, If I knew this information on Friday when you asked me I would have told you. This information only arrived with me yesterday Saturday night Oz time & I posted the news ASAP. I could not tell you if I did not know.

As I said in the first post above We have just received some advanced information today regarding the O2 Eliminators.

On this forum we try to keep up with the latest information & procedures. Things may change from time to time, this 07 XT has even fooled a major company like Dyno Jet & they are the masters on tuning bikes.

So please don't shoot the messenger. If I knew this before hand I would not have 20 sets of O2 Eliminators sitting on my desk. Once you get to know me better Cam147 you find I do not beat around the bush, if I make a mistake or have mislead someone I will be the first one to correct my statement as I believe in facts not bull sh*t.

Yes Paul 06 maps will not work correctly on a 07/08 bike.

Kev,

Blimey mate. Thats a little worrying indeed. Lets hope YAM listen to the dyno-jet team. If not, i will be very keen to understand what you and Freez propose going forward as i am keen to get mine back to the dyno testers. However, given this latest update i will hang back and see what you guys propose.

Thanks for the advanced warning

Cheers

WB

Mate I will be contacting Dyno Jet directly to gather further information & then onto Yamaha Japan.

They remapped the 04 models so I can't see why they won't do the 07/08 models.

The only thing that confuses me is there only seems to be a hand full of 07 models with very bad surging, I know there was a difference between my two 07 ECU's as I have air/fuel ratio print outs on the dyno of both ECU's & they are quite different in the mid to low ranges & both have the same software level.

Thanks kev

does anybody know where i can get an 08 map from please

kev, quick question.

Did you check that information with Dynojet themselves?

My mate had a 07 and we did a lot of testing on it, with and without the O2sensor.

He ran the bike for a few months with the O2 eliminator in and it went just fine. We did however make a custom map for his bike.

Freez,

The way it happened is like this, last Friday, I was talking to Simon Cope, owners of Carbon Cans Co., who is also an authorized retailer for DynoJet products, he has a dyno test machine in his workshop to tune his new cans to all different bikes, furthermore he was trained by dynojet officially with diploma et all.

However Simon told me that he wanted me to remove the advert to the O2 eliminator from our website because he was told by DynoJet that they will not be shipping these as they found them not to be working for the 07/08 models of the Yamaha XT660X/R.

The tests done to these bikes with the 02 eliminator and a PCIII showed no improvement in the surging issue of the 07/08 models and this problem is directly related to the ECU of these bikes which has proven to be incorrectly mapped.

For that reason DynoJet have told Simon that all new PCIII sold for the 07/08 model will have a warning label telling people simply to disconect the Lambda Probe, and not map the fuelling at the 2K range which seem to be the best compromise for the time being.

DynoJet will wait until Yamaha finds a solution to the erratic mapping issue with their ECU before they will re-introduce the distribution of the 02 eliminator.

So for the time being the ball is entirely in Yamaha's court.

For the exact same reasons, Kev has decided also not sell his 02 eliminator until a viable solution to this problem is found by Yamaha.

Rest assured that Kev will enquire with Yamaha, and he believes that if they've succesfully remapped the 04-06 ECU's that there should be no reason for it to be done to the new bikes too.