Impala While undergoing many facelifts in its history, the Impala has proved itself to both civilians and police forces as one of the most capable 4-door cars GM has ever offered. Currently moving towards its 10th generation the Impala is one of the longest lasting and popular models.

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Flowmaster's on my 2007

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Old July 16th, 2009, 10:30 PM
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Default Flowmaster's on my 2007

I haven't been here since before July 1st. First of all, I got my Flowmaster 40 series installed on my car and it sounds super nice (video to hopefully come soon). It turns a lot of heads when i'm cruising by or start it up in a parking lot.

Anywho.....anyone know about how much power/torque the exhuast added? If any at all? Had the resonator removed and new piping all the way back to the mufflers.
Old July 16th, 2009, 10:33 PM
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Its hard to tell without Dyno testing a vehicle.
Old July 17th, 2009, 5:25 AM
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Probably very little. Depending on your other mods. What piping did you go with?
Old July 17th, 2009, 11:06 PM
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I told the guy shop 2.5" but idk. It looks smaller.
Old July 18th, 2009, 9:24 AM
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Mandrel bent?
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