I was just wondering what i could do to make my car louder i bought a muffler but when i gas it, you hear the engine more than the mufler but when i let of the gas pedal then the muffler sounds loud the muffler is magnaflow i've already gutted the cat by the headers but i haven't gutted the one under the car, will it help? and what kind of cold air intake should i buy? what else would make it run better performance wise?

 

A header will make your car louder, too. As will an intake.
Some mufflers are louder than others.
A cat-back system will increade the decibel level too. Are you looking for performance, or noise?

I have intakes in stock for the 3rd gen Protege, but you don't say which year you have...

 

its a 1998 2nd gen. but i guess im looking 4 both noise and performance!

 

Why make it louder? You could disconect everything from the cat coverter on back and then it would be real loud. I had a 84 mazda glc that sounded like a tank when my exaust got ripped off. I drove it around like that for about 6 months, but i got several tickets.

 

You could gut the inside of the cat under the car but you would have a constant check engine light on. There is an oxygen sensor behind the last cat converter that measures efficiency.