Help Please, stalling and hesitation.. Thank You

[jubie]

My car has been stalling and hesitation , ............ I Just put a new a filter in , and I still get hesatation , the funny thing about it is when I drive the car without the air filter it has hesatation in the begininng , but after driving it a couple of miles the stalling and hesatation go away , when I put the filter back in , its worse , my question is ...............what else could it be ?? can it be fuel ?? what other filters can I change ??

Thank You