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How much horsepower does a cat-back exhaust add?

I’ve been thinking about upgrading my exhaust with a cat-back system, but I’m wondering how much horsepower a cat-back exhaust can add?

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Kathryn Mae Kurlychek · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
A cat-back exhaust will likely improve your vehicle’s performance, including its horsepower. Generally speaking, a cat-back exhaust system can add up to 5 HP, along with boosting the overall performance of your vehicle.
But exactly how much horsepower a cat-back exhaust adds is hard to say—and ultimately, that will depend on your car’s specs, including the condition of your engine and exhaust, and even the model you drive.
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