hp and mpg increase by doing dual exhaust?

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hp and mpg increase by doing dual exhaust?

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Ford Forum >> Brand Review >> Intake, Headers and Exhaust >> hp and mpg increase by doing dual exhaust?

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hp and mpg increase by doing dual exhaust? - 9/7/2007 2:25:21 PM

STUFFSK825

Posts: 11
Score: 0
Joined: 8/31/2007
Status: offline

hey everyone i have the 1990 3.8 liter thunderbird base model and want to take the dual exhaust/exhaust manifold/headers off of a supercharged thunderbird at the junkyard (that has the same engine) would this be worth the hassle? how much torque or horsepower would i have increased along with my gas mileage?