Well the only one I have personally used is the Injen and I like the CAI configuration by them very well built and no cel

My buddy has a Simota and I can't tell you performance wise how good it is but it is sexy with that carbon fiber cover.

And you can't go wrong with corksport products. I have the catback exhaust with race pipe from them and I can say the build quality is amazing and they do nothing but stuff for mazdas.

I know that probably din't help but honestly any of them will get you close to the same gains. I would go for looks and sound (try youtube for sound clips).

 

Sorry to keep asking so many questions haha.

Did you have to remove your front bumper when you installed the injen CAI? How "involved" did you have to get?

Also If I were to buy the injen SRI, are you sure it would fit the 2.5L?
It says 2010 Mazda 3, when you scroll down on that link, but if you start from scratch on any website and punch in your car info, it doesn't pop up as compatible anywhere. I hate the inconsistencies!

 

I believe you can just undo the part by by the drivers side wheel and pull it back to reach in there and attach the filter but I took off the bumper when I did mine it took about 15 mins to pop off it's pretty easy. As far as the Injen SRI I can't say for sure since I haven't tried it but looking at mine I don't see anything that would get in the way.

 

good luck with that lol i have found that if you want any really good feedback on preformance mods id try mazda3forums.com

somepeople (well really only one ive had a problem with) on here will really fight you on anything you say and even if they are a million people with posotive results they still wont agree

dont get me wrong there is some really good informantion on the site (like the info the one guy gave you) and you can normally get fast info but for preformance stuff... not so much

 

What you fail to realize is that even if those million people scream their anecdotal posotive [sic] results from the tallest mountain a million times each, the laws of physics will remain unimpressed; so too will be engineers at Mazda and every other vehicle manufacturer in the world.

The fact remains that things like SRIs and CAIs effectively borrow from Peter to pay Paul. Said another way, if the intake is optimized for WOT at redline, then midrange torque and drivability will suffer by a commensurate amount. The only real way to increase the power of normally aspirated Mazda3 engines is to add forced induction, or rebuild the motor with larger valves and the ability to withstand higher RPMS (a move which will also negatively affect low and midrange performance).