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How much hp does a straight pipe add?

My sister is advising me to put on a straight pipe instead of doing a muffler delete. How much hp does a straight pipe add?

Rachel Rigolino · Updated on May 9, 2022

Reviewed by Shannon Martin, Licensed Insurance Agent.

Modifying your car is a great way to make it more powerful! You’ll likely gain about ten hp with a straight pipe as compared with five hp or less by just taking off your muffler.

Keep in mind that putting on a straight pipe also involves adjusting your fuel injection and otherwise tuning up the car. Be sure you hire or consult a professional.

Important note: In most jurisdictions, putting on a straight pipe means your car can no longer be driven on the street and only be used on a closed track. This is because a straight pipe is not attached to a catalytic converter and therefore will not pass an emissions inspection.

Car enthusiasts are always finding ways to enhance their vehicle’s performance. Another important part of your vehicle’s performance that’s often forgotten is

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