I just changed out my plugs and filters, and thought I'd post a step by step guide for those curious. Someone wanted one a while back.
Step one, open the hood, you should notice a sexy V8 bi turbo engine. Gaze into its carbon for 3-5 minutes, after which you'll be ready to get started.
Step two, grab a torx t20 screw driver, and remove the the two screws holding each of the intake inlets to the radiator support.
Step three, loosen the clamp connecting the back piece in the intake inlet to the intake hose. You only need to loosen the one clamp, but you can do both if you like.
Step four, hit the two pop buttons on the carbon cover, pull on the back side to remove from engine.
Step 5, the first thing you will want to do is remove the bolt in the front center of the air box. You will need a 6mm hex wrench to remove.
Next thing you will do is remove the two bolts on each side of the bottom of the air box. You can't see these from the top, but they are underneath. Use a 10mm wrench to remove these.
Last thing is the MAF wiring harness. Again, you can't see this from topside, but after removing the bolts you can lift the box up ( and do so gently as not to damage the wires) and gain access to the harness. Just grab the connector, squeeze and pull.
You airbox is now free to take out.
ALSO, now is a great time to replace the filters!
Underside view of airbox to help with location of bottom nuts and MAF connectors.
Engine once airbox is removed.
Step six, now that the airbox is out of the way you have access to the coil packs. Start out by removing the connectors. Like the MAF connectors just squeeze and pull.
Next grab a 10mm socket and remove the bolts holding the coil packs to the head. The driver side is that simple, other then pulling a PCV line out of the way, the passenger side you will have to unbolt two line to get access to all of the coil pack bolts.
On the passenger side there are three bolts you will have to remove, each one is a 5mm hex. Unsrew these, pull the lines to the side, and out come the last bolts.
After this you are free to pull the coil packs out, and have access to the spark plugs.
All thats left to do is grab a 5/8in spark plug socket, and remove the old ones. When putting the new onces make sure to use a torque wrench, and tighten to 22ft lbs. I also reccomend using anti sieze on the spark plugs, it's a dollar investment to prevent getting a spark plug stuck in your head.
Just do the steps in reverse to put it all back together!
Let me know if you anyone has any questions!