We can’t ECU remap the XV950 – at the moment – so have to use a Power Commander PC V. The owner of this one had fitted some aftermarket pipes and wanted to make sure the fuelling was OK. And blimey, sure enough did it need some sorting out. Along with the air filter mod he had his engine was desperately, and we mean it, short of fuel.

So a properly setup Power Commander really made a difference. It was running so lean that the extra fuel completely changed the way the engine felt, power delivery and throttle response. There’s no secondary air on this model but we did despatch the lambda for good measure…

Lean as a lean thing, this Yam' needed fuel, desperately....

Lean as a lean thing, this Yam’ needed fuel, desperately….