For the cheapest pod filter setup, you'll be doing a short ram intake (SRI) with the stock piping. (This is how i would do it) Take the airbox out and the stock piping. Pull out the old drill and drill a hole the same size as the diameter of the sensor. Make sure the sensor fits nicely and then clean the hole up a bit. Then get some silicone and squirt a small circle around of the hole (not in) and let it dry; don't put the sensor in right now. After it's dry, put the sensor back in. Having this puts a nice little seal around the sensor, like a permanent o-ring. Get an adaptor to fit onto the end of the pipe and pod filter and put it together. You're done! This is only a short ram intake (SRI). It still sucks hot air from the engine bay. Great for the induction noise. If you want, you can make it a cold air intake (CAI), but that requires more work and creativity, if you decide to make your own. You might be able to buy one, but i don't think it's worth the money.