motor seems to be lagging?

[2000maximagxe]

sometimes when i take off from a dead stop, my motor will hesitate? like ill get up to 3 or 4 grand and i wont take my foot off the gas, but the rpm's will jus stick for a second. idk why its doing that. im throwing a check engine light for my map sensor and my cat, but the light has been on for a while and it just started doing this. im thinkin it may be spark plugs or fuel filter? but im not sure.

[loystock]

Fix your MAF and cat problem first, reset the CEL and we can go form there.

[2000maximagxe]

well when i run the code it says that the cat isnt making proper emitions.. and how do i fix the MAF?

[jltibbs]

Check the plug first and clean the sensor as well with CRC MAF Sensor Cleaner: