my stock air filter is getting dirty, just wondering if I go cheap adn get some air filter from canadian tire (like pep boys in us) will that decrease my car's performence?

 

never buy anything from canadian tire except rainguards

 

Get an intake adapter and cone filter.....$40-50

 

yeah... get a something like pop-charger from custommaxima.com
The sound above 3K RPM is pretty cool.

 

The Nissan OEM unit is pretty good. If you want higher performance (but not much) you can get a cone intake. I would go for the JWT Pop Charger. The cone is larger than the generic ones, it comes with a velocity stack (curved metal attachment to the MAF), and most importantly, a nice metal bracket to hold the whole thing in place (generics don't have that).

Intake adds 3-4hp (maybe). But if you are happy with stock noise levels (which is very quiet), the Nissan filter is fine.

 

like other peeps said get INTAKE(adapter/filter or CAI or Pop-charger)

 

how much hp and noise does k and n (filter/charger?) adds?
the guy @ canadian tire said $80cdn for K&N charger
I want something that sounds close to stock because I won't be driving the maxima after this november and I'll be getting my own new car and my dad will be using this car to carry his clients around, and he won't like the noises. Same with my mom, she'll probably use it as a shopping car or something. But during those months I do want something that adds power and not much noises.

 

If you are talking about the panel filter, it will give you no horsepower. Well, maybe 1 hp. I had it for a while, and it's primary benefit is that it is cleanable and reusable. As for power, an intake is a better option.

 

I agree with Eric.