k&n drop in filter

[lowincash]

Anyone plan on getting one? On my previous I remember swapping out the stock filter with the k&n one the car had better throttle response and slightly louder engine sound. I was checking k&n's site, looks like it's the same filter used on previous gen too. Gonna order one, we'll see if it's good on this car

 

[lowincash]

Got the filter in today. As expected, felt no power gain and heard no sound difference, maybe a slightly louder growl. But just like on my pontiac, throttle response felt quicker and smoother. Felt like my car had a stuffy nose and now it's unclogged.

 

[jadnice]

Have no plans on getting that filter... its all about cold air intake.

 

[concept]

Already CAI

If you look at this photo, you'll see that outside air is pulled directly into the intake, meaning no CAI is necessary. OEM is, essentially, a CAI design.

 

[ceric]

Agree. The ScanGaugeII-X on my CX-9 constantly shows IAT (intake air temp) to be nearly the same as the outside temp (sensor inside bumper).
The intake of CX-9 is similar to that of the Mazda3 shown here.
What remains is the air flow allowed by the filter.

More flow, more fine particles going through. It is a trade-off.
I have K&N filter on my CX9 for 6 years. Love it. Don't have any issue with it.
Cleaned it three times so far.