I drove it a few miles today and it still only has the knock sensor code. I realized I unplugged the tps and the temp sensor thats why those codes came up. (stupidity) I am pretty sure the air intake hose is the problem :) I hope I hope. I will let you guys know... Hopefully I will get it fixed friday or saturday on my days off. Now all I have to do is get new tires and get it alligned. :D im excited!!!

Cool. I wouldnt recomend using pvc as an intake, Try to get one of those ebay "cold air intakes" which is just an alum tube and some couplers. You can get em for like 25$

Pepboys has a Spectre Modular Air Intake that you can customise to fit your car. Its awesome.

If your Knock sensor keeps coming up then you have a break in the wire. This happened to mine and it made it idle funny and all kinds of strange things. It defn sounds like the same thing that happened to me so im guessing thats probally what is happening with yours.

I cant even find the knock sensor could someone point me in the right direction??? lol.