I think throttle response differs based on bypass ratio, but I haven't done any testing to know for certain. Is there any precise way to find the throttle response time (spool time) of jet engines in J:NO? As far as I'm aware, there is no specific modifier in the configs.
yeah there's no modifier for it unfortunately
from what i've experienced and tested myself, bigger jets definitely have longer spool up and down times, though bypass ratio didn't significantly affect it to my knowledge