It's about time for me to change my stock filter after 12K miles. I currently have the Z-tube and looking into my options in replacing the filter. The Z-tube is perfect for what I want out of my car as far as noise and performance go.

Although quite limited for us sedan owners, I have some choices for replacing the intake system: JWT pop charger, Stillen intake, K&N drop-in (the rectangular design), Injen and AEM. I've researched quite a bit on the first 4 choices (don't know too much about the AEM), and have experience with the K&N with my previous car which actually turned out to be not too good since it yielded check engine light problems. As far as price goes, K&N is definitely the cheapest while either Injen or AEM is the most expensive, and as far as horsepower gains, the Stillen seems to yield the greatest at 11 HP and I read that the Injen yields up to 9 HP.

What I'm looking for my next intake system is a happy medium of price, reliability and decent performance gains. I was thinking of putting my money down on the JWT but I saw on the Stillen site that they are offering free shipping for most of their products (including the intake) for a limited time, so I'm a bit tempted. I don't think I'm gonna go back to K&N after the semi-bad experience I had. I'm curious to see what the rest of you have for feedback on aftermarket intakes for our sedans. TIA

 

Get a Stillen, or stay stock with a drop in filter. The Pop-Charger has a hideous "heat-shield". Wouldn't even consider it a heat shield.

 

injen or jwt FTW...if you have money ARC

 

nismo

 

amsoil nano drop in filter

 

stillen or k&n drop in

 

nismo

 

I Like My Aem CIA, Do Not Know What The Problem Is With The CIA With The G World. Seems No One Has Them. I Had A Few People Think That I Had An Exhaust But, Nope Just A Good Ol CIA. Guess I Am Old School AND LIKE THE SOUND AND THE VERY LITTLE POWER IT PUTS OUT. I WILL ALWAY INVEST MY $$$ INTO AEM. GREAT PRODUCTS

 

or you can get the pop charger and buy the stillen as well for the better heat shield...

 

NISMO has my vote.

 

None of them will give you any real performance gains, but I like the stillen because it has the best heat shield and I heard that it is not as loud. The cai's that use the long intake tube make it a bit more difficult to draw air in. I've heard that people have seen lower dyno runs after using long tube intakes.

 

fujita ~~

 

Fujita

 

I have an AEM CAI I'm not using if you decide to go that way. I currently have dual K&N.

 

Hearing about heat and all referring to incoming air, I was reminded of when I drove a 92 camaro whose intake was right above the radiator. What I used to experiment with different insulations between the radiator and intake among other things I installed one of those indoor/outdoor temp readers which have a probe. I would install this probe inside the intake, before the mass sensor to monitor air temp, and run the wire back inside the car. This worked quite well as I could see a change in air temp at intake depending on the mod. Maybe this is something that someone could do with our cars, since these temp readers are not expensive and we can finally get some more or less data as to how much a certain mod affects air temp.. just an idea guys.