Originally Posted by Yankytyke
Already got a tuner & CAI.
Was looking at the cermanic headers....
What type/brand CAI? Did it come as a package with the tuner? If so, it should work with the larger throttle body, should you go that route. Be sure your exhaust is upgraded as well to take advantage of more air the larger throttle body can flow. Just because a throttle body is rated for a larger flow doesn't mean it will with an existing setup.
Think of an engine as an air pump. More air in requires that the air can get out easily. The tuner adjusts for this more air (and fuel), as well as a free flowing exhaust, and adjusts the timing to take advantage of this.
You may even need to have a custom tune built for this arrangement. Contact the esablishment that manufactured the tuner to see if hey have a custom tune for what you want to do. Or maybe the tuner you have already has a tune for this possible setup?