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If AA did the tune, they should have a record of the VIN in their system to let you know if/what kind of x pipe was on it previously. I can't imagine someone who is willing to pay for a high end supercharger isn't also running an x pipe or at least test pipes on the car. Probably figured it would be safer/easier to sell with a 50-state-legal exhaust system back on it.
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'13 E92 - Space Grey
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