Put it this way: if you change parts on the car, regardless of what they are, the car will run better and make more power with a good custom tune on it. Even if the X CAI is "safe" without a tune, the car is better with a tune. In fact, the car is probably going to be better with a custom tune and *no* parts than it is with a stock tune and no parts.
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Is you is, or is you ain't, my con-stit-u-ints?
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