Hey guys, I have a 07 Type S, since it already have cold air intake system, what do you guys think about putting in a K&N replacement filter only? Does it help with anything?

 

It depends on what system you have- some design their pipes around their air filter and its design
In general K&N is great- just dont over oil it when you clean and refill- follow the directions and all is well

 

I think the OP is implying that the stock intake is a CAI, and asking about better performance if a K&N filter is used. (That's how I read it anyhow).

I think the conventional wisdom is that the TL-S stock Intake and Exhaust are pretty free flowing, but that an aftermarket CAI will yeild additional gains.

 

Yeah sorry thats what I meant, since the stock on already draws air from the lower grill, guess nothing wrong with getting that KN filter..

 

I don't think a drop-in K&N filter is as good as a aftermarket CAI with open-cone filter like the AEM. BTW there's been tons of discussions about K&N vs. AEM dry-flow filter. K&N is a leader in the field when it comes to most cars but the consensus around here is AEM is better in the TL.

 

I'm not able to comment on the K&N's effectiveness when compared to a CAI, but one thing I know to be true is that

there is currently no K&N filter that will fit a 2007 airbox.

The pre-2007 air boxes are rectangular in shape and the 2007+ boxes are the same size and shape except for one corner which is 'lopped off'.

I learned this first hand when I tried to install a K&N designed for a 2006 into my '07 and it wouldn't fit correctly. K&N is aware of this because I was in contact with someone in their R&D department and they said that they would be working on a new design for the 07+ models.

...just thought you'd like to know so you don't go and learn the same thing I did while standing over a hot engine bay.

 

well thats good to know.. now I won't even bother searching on the web..

 

Can somebody point me in the right direction? I would like to replace the air filter i've used with my AEM CAI... This is the first time I would like to replace it. What size/model filter do I buy?

 

Keep in mind the K&N doesn't filter anywhere near as good as the stock filter or any paper filter for that matter. For just a drop in filter replacement I doubt you will see a 1hp gain. If you plan on running the car for 20K miles and selling it, go for it. If you plan on keeping it 100K I would leave the stock one in.

 

this guy has a 84 Buick GN.... F*ing ballllllzzzzyyyyy.... definitely a Top 25 car in my hypothetical garage...

"Don't diss all Dom's... they can be hot as balls"

 

Measure the inlet for a specific fit AEM DryFlow filters are pretty straight forward
21-200DK - 2.25" Inlet
21-201DK - 2.5" Inlet
21-202DK - 2.75" Inlet
21-203DK - 3" Inlet
21-204DK - 3.5" Inlet
21-205DK - 4" Inlet

Hope this helps

 

wait I was wrong the replacement for the AEM is 3.25"x5" 21-2110DK