Here are Powerchip's claims for the X5 4.4i Valvetronic with 93 Octane. That's an increase of 18HP/19TQ. Is the $649 quote for the PowerchipGold93?

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In the garage
2008 Infiniti G37S Coupe (Traded)
2011 BMW X5 xDrive35i
2011 BMW X5 xDrive50i