Ah OK .. so the diag tool is available for end customer purchase (not just for Yamaha dealers)? Is it affordable .. .would you have a source (preferably in NZ)?

Thanks
Thomas :-)

in europe available for customers around 100-120�

Can this be done on the XT660Z Tenere as well?

an xtz needs a diagnostics tool, xtr and xtx it can be done thrue the dashboard...

So here we go (XT660Z/2014) ... 16kkm and running like a tractor or wild horse, surging and stalling (and driving me NUTS). Close to selling that f..ing thing.

Was running smoothly until a month ago :-(

Got the diagnostic tool from Europe -- 70Euros seemed reasonable and read out the ECU values last weekend: TPS = 17-97 and CO=-2

I played with the CO values and had the impression that putting CO to -4 or -6 would smoothed the bike's behavior but it's still cutting out (specifically when pulling the clutch)

Where to go from here??? Love the thing too much to let it go.

Thanks
Thomas

Forgot to mention: No faults shown from the ECU (apart from lean sensor but that was the guy at the WOF throwing it when it stalled on him/history reset fixed that)