>>529592973
No in the launch version of mechanics Guts basically acts as a minimum speed in the Final Straight for if you've run low on stamina and the effect caps out on effectiveness somewhere around ~450.
Afterwards there's an actual mechanic.
It occurs when 追い比べ pops up on screen for pushing high guts umas ahead of lower guts ones competing for the same spot
Here's an ancient example from several lifetimes ago.

>>529311950
>>529311687
Forgot webm.
It's the one that says 追い比べ.