Cold air intake
 

What is a good cold air intake to go with and the pricing on it? Is this something worth doing?

I installed Corksports SRI for $190 and they say it added 8hp and the sound is awesome.

If you've got an MS3, then a lot of people have had good luck with the Cobb SRI, too. For a standard 3, I'd probably go Injen...They've got one of the best reps out there, and one of the only companies who has CARB approval for their intake.

http://www.cobbtuning.com/

http://www.summitracing.com/parts/INJ-RD6061P

I've had an Injen in my Protege5 since '02. See the CARB badge? It's silver and about the size of 2 postage stamps.
http://www.msprotege.com/members/Nat...a%20header.jpg

The AEM CAI on the mazdaspeed 3 gets a 28rwhp gain on the dyno. There is a youtube video I just watched on it.

I'm a mazda newb of about 3 hours or so right now and mine came with one on it and I can say that car is f-in fast. It scared the crap out of my technician that works for me... lol...