The FIPK is the exact same thing as the air charger. The only difference is that the FIPK has a CARB exemptin sticker that comes with it to make it smog legal. The air charger is what they label the product as untill after the CARB testing is done.

Here is the sticker that comes with the FIPK to make it smog legal.

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My wife - "We haven't even made a payment on it yet and you're scratching it all up!"