Both Maverick Vinales and Valentino Rossi believe the engine choice for next year's MotoGP season was made 'quite easily' and now the search for more rear grip continues.
Yamaha wheeled electronics guru Michele Gadda out of the Pata Yamaha WorldSBK squad mid-season and into the MotoGP setup (although his role is across both) to work on the electronic side of the equation but the chassis - mechanical grip - also needs work.
"Yeah I think from the engines that we tried in these days, it’s quite easy to make a decision,” said Rossi.
"For me, we have a lot of work to do, especially if we want to try and be competitive with Honda and Ducati, but also with Suzuki. So, I hope Yamaha continue to work and push to have something better in February.”
Vinales added: “The important thing was to find the base and now for Malaysia, we have to improve the top speed a little bit, that will be very important for long tracks. We need more traction, this is still our weak point. But overall I think we have a really competitive bike.
"As I said we didn’t play with the chassis, we just wanted to try the engines, the lap time was there, very consistent. I was able to keep high 38s and low 39s on the pace, so this is really good I think. So let’s see, I was riding when the track conditions were worse to try to improve myself and I’m actually really happy.”