On the description page it mentions double-tapping acceleration button to negate the acceleration slow-down. I don't know if you can edit that in the ini as I haven't looked myself. I've gotten by just fine double tapping W when I need to do a quicker acceleration from a stop like when receiving a CODE-3 callout or a suspect starts fleeing in a car. After the initial acceleration I'll just stop pressing W for a half a second to go back to the mod's default style.