Some power can be made with the stock box.Granted an intake setup might give you a little more.Get flashed either way .I have a drop-in right now and Ill be installing the injen intake kit anyday now.Ill get to see the gains first hand with retune.Been curious myself.

 

how much is the ams filter kit im too lazy to look? lol thanks guys

 

I have the aem and i'd rather go with something else. ARC box sounds like a good choice...

 

so is the ams filter kit the way to go?

 

yea i would like to know this also i have a friend with a 06 mr and injen pipes and he has no issues with his car and sounds great also..

and when i look at the ams wedsite the filter kit is just a K&N filter anyway

 

I have the Works drop-in filter. Air filtration area would appear a tad larger than K & N. Would not expect any additional gains, if any, on the dyno.

 

green drop in filter..nice clean sound and works very well with stock box

 

Pipercross drop in filter.

Samco induction hose.

Stock air box.

 

k&n drop in

 

I held 2psi more boost at redline with the HKS filter over the stock box. Ended up picking up 1.5mph in the 1/8th.

 

1.5 is signifiagant gain.

 

I've got the Injen intake and upper pipe kit and it's awesome. Have been using it since 2003 with no troubles. I personally saw a big power difference on the dyno many years ago so I was pretty happy about my purchase. The stock diverter valve made the blow off sound so loud, it was awesome! Later I installed the jdm diverter valve and the shifts were more chrispier and smoother but the blow off sound is not as loud as the stock back diverter valve.

 

are you loving your Injen intake now?

 

I had a lot of comp surge with the intake on my car. I went back to the stock unit with a drop-in and I'm much happier now.
My vote is for the drop-in.

 

K&N for just a cheap drop in would be great,BUT if your already gonna do the basics mbc,tbe,fp, you might as well throw in an intake because your gonna need get tuned anyways.