:toothy1::Suspicious_DXD5FP::angel9::bounce016::ju mping0006::D:guitar player::grouphug5::thumbsup[1]:

well i have checked all fuel injection components one by one and they all read ok, the ecu was changed from the 00 ending to the 01 ending made no real difference, the tps as per recall was also changed that made no difference the bike came with a brand new set of staintune pipes wich i took off and replaced with originals and that made no difference either , someone blocked the EGR hose wich unblocked out to original specs,i have played with the c0 adjustement from -10 to 124 and its still not good anywhere,i checked valves clearances as a precautions and they were well within specs.i changed the spark plug,checked high tension lead and caps still no problemo..moving the tps clockwise leans out the bike even more.i have owed the bike for 5 weeks of which yamaha has had if for 3 now...all i have done is with scope of worshop manual instructions,i could change reading from coolant sensor,tps,air temp but then i would be creating 2-3 wrongs to make a right.???yamaha just need to supply every xtx660 owner with the proper mapping simple as that!!!on this particular m/c i cant change really anything but tps position and c0 and that really gives me scope for improving the bike by .00002% and that aint good enough.say if it were on a formula three say an MBE Mugen Honda Engine it would come with the right map From engine manufacturer and the map can be altered infinitly after say giving data back to the engine maker.the he come back and say let lean it out between such and such rev by say 2% and increase advance by .25 of a degree between such and such.here the map is all out and not by very small measurable and changeable parameters but by heaps evrywhere from timing ,to mixture , to all diffrent engines parameters the ecu globally needs to be completely remapped properly.like when i bought this xtx660 i thought it would be way way better then my xt 500 and it is a lot better in the braking and handling departemnt , engine wise , torque wise,flat spot wise it just cannot be compared,i am so hunhappy with it i would be more then happy to let it go for what i paid for and ill even give a brand new set of staintune cans for good measure, i still have my xt 500 and in the supermotard version i might add with the road tyres..i did forget to mention that the bike is running so poorely that with a full tank i do 110 kms that just reflects that i am cranking the throttle open for... nothing just for waste....so to answer your question about fixing the problem i have just followed instructions from yamaha and technically there isnt a problem with the bike evry component is withing specs...so the problem entirely lies with poor mapping , poor design ,and no regard whatsoever for rideability..Please dont take me the wrong way as a winger...but this bike has been hell from day one and the only options to fix it is to bodge it...and i aint bodging it...
i am now just waiting for yamaha to call me (its been 3
weeks) to tell me that its fixed wich is very unlikely i havnt heard any set of positive phone call yet...steff

We are sorry to hear that, I mean it, we are. Though there is the fact that you must be one of the very few unlucky ones which have got a bike with a serious terminal problem. You could sit here and read months worth of posts and you will learn that 80% of people in this forum has had more or less same problems you are having but out of those 80% all of them had the issue rectified either by replacing both ECU and TPS or fitting (accurately) a fuelling device, either a PCIII or a Kev Mod. Yet, so far 2 people could not have that issue resolved for reason beyond our understanding. One was a guy who managed to get a full refund from yamaha bought himself a TDM, moved on.
You are the other one, I hope for you that you achieve the same as this guy, get a refund, buy yourself another bike, and live happily ever after.

Cheers

oi its not that i dont like it . its my dream bike allright but the way its is tuned or should i say untuned makes it unridable, its not a question of taste its just a fact, how would you like to ride "any "bike that stalls unpredictably at roundabouts, at low speed?would you find that personal taste?how about using 10 litres per 100 kms do you find that a matter of taste also?please everyone dont get me wrong i respect what anyone rides to me any rides is a good ride but this particular bike model has a huge problem, taste doesnt come into the equation here.its obvious you did not understand what i am trying to say...if that bike performed properly it would be soo soo sweet...and please so everyone can feel it for themselves i am happy to let anyone from this website test ride the bike if i get it back from Yamaha to see exacltly how it performs.. and by the way it cannot be a question of taste yamaha has had the bike longer then i have!!!!i love it!!!!

I would say there is definately something wrong as your fuel consumption is far more than mine. I got 110 miles until my fuel light came on and I rode my bike absolutely flat out one night.

When speaking to Yamaha UK a couple of days ago I was told that not every bike is the same and sometimes you can get a duffer. Sounds to me that you've got one. You could get 10 XTX's all set up exactly the same, all to spec and they may all run differently. Height from sea level can make a difference as well with the difference in air pressure. There are so many contributing factors to the running of your engine.

Anyway, I hope you get to the bottom of your problems and don't forget to let us all know how you get on. Nobody is snubbing you, we are all very interested.

i will keep you updated.. for sure thank you for your understanding...i can just imagine how good i would be if it was just right......lets face it for an hard core xtist here having brembo's, fuel injection, better suspensions,4 valves,the smaller front wheel the extra front fork travel..should be the best bike in the world.. to me anyway....
steff

xt660x back after getting it back from yamaha factory
 

Got my bike back today from yamaha Australia my yamaha dealer got the bike back and i went to check it out..i took it for a Burn i let it warm up the guy who owned the dealer told me hed been speaking to yamaha and it was fixed and surely enough took it for a ride told me it was great to ride now and all fixed , for good measure told me he has it going at 90 km/h ...
the problem aint at 90 km/h but between 0 to 80 km/h mainly at low speeds..anyway the bike was elegantly fixed . it idles now at 1870 rpm so i guess it wont be stalling anymore!!!!!!! the co at idle i am told has been also fixed its now set at -5 .. yes i am not joking..-5 apparently that was set with a prong in the engine exhaust.. after all what do i know?????????
what a great fix!!!!

So are you a happy bunny now or is that sarcasm in your post?

If it is fixed then good. Hope you enjoy riding it, at last.

Pleased to hear you can now join in with appreciation of what a great little bike this is. In my half-century of riding I haven't had more fun than with this one.

Good Result - one up to Yam + your dealer. :thumbsup[1]:

Scary when claim to be a mechanic, no offence but so... yeah, what exactly do you know, huh? :laughing9: :laughing9: :laughing9: