My 2000 Honda Civic EX shuts off when driving it, sometimes it'll start back up but sometimes it won't

I got my tail pipe and muffler replaced. I also got the catalytic converter and MAP sensor replaced in my car as well. My dad believes it could be the fuel filter, but we have no clue what it really is.

Take it to a qualified mechanic; He will run a diagnostic check on it, and tell you what's wrong. Well worth the $ 50.00! Can't hurt to go ahead, and change the fuel filter first!

I follow the concept that if a car was working fine before some work was done that the work done is one of the reasons for the problem that followed. It is wise to return the vehicle to the auto shop that performed these services for further resolution. Guessing has never repaired a vehicle. Knowledge as to cars is scientific. That is why mechanics must be trained and certified. You also have used multi dots as punctuation mark. This is incorrect. It is a fad and it is bad grammar. Please, do no use mutli dots unless you know it is according to the rules of grammar. The term ellipsis. Look it up.