How does a new battery pack help your acceleration?? Your Himoto is nitro, right? The only way more voltage would aid in acceleration would be in an electric vehicle. The turning on the other hand would definitely improve with more voltage. More muscle for the servo...
same way it helps steering servo more torque to open p carb faster true it works i notice that on my jato also more power to servo = more torque = faster carb response hope this makes sense