My 2002 Mazda Tribute lx seems to be sputtering. I've changed fuel filter. on 2002 Mazda Tribute

It seemed to be running better after changing the fuel filter, but now it just doesn't want to run smooth. Its not all the time but most of the time. What would you do next?

Asked by for the 2002 Mazda Tribute
Get your exhaust flow checked. May have a partially plugged cat. converter. Also, check and clean MAF sensor.
I will do this! Thanks for the advice!