So I just bought an eBay SRI. This one. Every where I read says to put in a K&N filter on it instead of what comes with it. My question is, which exact K&N filter do I buy?

 

One that fits the pipe diameter and has a similar sized cone filter element. K&N has a huge list of Universal Cone Filters on their website... all necessary dimensions are posted, so you can find exactly the product that you need. Once you know the part number that meets your requirements, search it online "for sale" and get it.

 

Then eventually toss it and buy the Injen CAI that you should have bought in the first place.

 

Well, there is that.

 

I bought a generic intake similiar to this and an AEM 3" filter and not only did the pipe not fit in the engine bay, there were no instructions in case I was just a dope and the pipe wasn't even 3"! It was probably closer to 2.5" so I had to just return everything