Originally Posted by luketastic1
Are there signs I can look for that would indicate a bad air filter? Also, any good names or part #s I should look for to replace it?
Just take them off and look at them. Dirty you can see, besides it doesn't hurt to change them every once and a while. I have K & N replacement filters I can't remember the part #. I got them on ebay, you can look the number up on K & N's website. However stock one's will do nicely at cheaper cost you can get them almost anywhere. Remember that there are two of them.