rjdgriff

i have a 98 banshee bored 10 over have toomey t5 exaust kn filter and durablu rear axle. i ride roads mostly but also like to hit the mud, fields and trails... i have a stock front sprocket and it dosnt quite have the pull i am looking for in the mud so my question is should i go with a 12 or 13 tooth front sprocket and how much difference will each one make/ thanks for your help