Uncorking Yamaha WR450F 2021
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21.11.22 – 13 4483:55Опубликовано 31 декабря 2020, 12:17
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We got new WR450F 2021 and had time to shoot uncorking, and comparison with 2020 model (separate video at our channel). Uncorking includes: throttle stop shortening, removing of intake restrictor (airbox) and exhaust restrictor (muffler).
After uncorking it’s recommended to upload new fuel map via mobile App. But there is no map for WR450F 2021 at official Yamaha’s website. There is map for 2020 model only which should not fit, because new WR has new cylinder head: combustion chamber geometry with steeper valve angles, more aggressive cam profiles, a higher compression piston with low friction rings, longer connection rod, larger exhaust head pipe connector. We decided to wait for appropriate fuel map.
We got new WR450F 2021 and had time to shoot uncorking, and comparison with 2020 model (separate video at our channel). Uncorking includes: throttle stop shortening, removing of intake restrictor (airbox) and exhaust restrictor (muffler).
After uncorking it’s recommended to upload new fuel map via mobile App. But there is no map for WR450F 2021 at official Yamaha’s website. There is map for 2020 model only which should not fit, because new WR has new cylinder head: combustion chamber geometry with steeper valve angles, more aggressive cam profiles, a higher compression piston with low friction rings, longer connection rod, larger exhaust head pipe connector. We decided to wait for appropriate fuel map.
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