A longer woods loop on my 2023 Yamaha YZ450F using the Yamaha Power tuner to dial back the engine response to a more 350F like feeling.

The app says fuel and ignition settings can be adjusted +-10 steps. For this ride I created a map with a step down of the ignition timing turning starting at -10/2000 rpm, -9/5000 rpm, -8/8000 rpm, -7/10000 rpm. This resulted in a noticeable difference in throttle response. Really slows down the engine RPM build and dials back the power. While still a beast the '23 YZ450F was much easier to ride on this woods loop. The Yamaha Power Tuner is a nice option to change the engine character of the YZ450F and kind of like having two bikes in one with the push of a button. Fire breathing 450F moto bike or much slower revving easier to ride almost like a 350F.

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