need help 2001 plymouth neon

I just recently bought a 96 Pontiac Sunfire DOHC 2.4L 2 door with 118,000. Is it true that a cold air intake will mess up the engine. or was the person that told me this really hard on the car. When i bought the car that is all that came with it was the cold air intake not the stock one. P.S. i already relized the engine that is in it.

I have a 96 Intrepid, 3.5 ltr. After 4 years of not having the a/c belt on the car (we cut it off to replace something, don't remember what) I decided to put it on to run the a/c. I put the belt on & charged the compressor. It worked great for about 2 weeks, then the belt broke. I changed the belt again, and again about 2 weeks later it broke. Now taking a closer look I see there's a chip on the drive sproket (?). Again I replaced the belt, again it broke. I saw what was involved in taking that sproket off (probably where the chip came from) and want nothing to do with that! Luckely the serpentine belt part is good. I'm thinking about taking a drumel and smothing out the edges of the chip, so it doesn't cut the belt. Is this advisable, could I make it worse. Any other ideas? Thankyou