Does changing exhaust affect engine?

Yes
2. Changing the exhaust can affect the power of the engine.

Does straight pipe add horsepower?

A straight pipe will usually increase your horsepower by about 10, as opposed to only 5 or less by removing your muffler. Keep in mind that installing a straight pipe also requires tuning up your fuel injection and making other adjustments to your car.

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Does free flow exhaust damage engine?

No, a small displacement simply means that the engine is smaller. A lawnmower engine generally has a much lower exhaust flow rate than a car engine, but the lawnmower engine is usually much dirtier than a car engine.

Do Turbos need back pressure?

Back pressure is bad for turbocharged engines because it hampers exhaust gas flow and reduces turbocharger performance.

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2. If you’re too lazy to read, back pressure is bad for turbocharged engines and will cause power loss and increased turbo lag.

Do I need back pressure exhaust?

Please excuse my mess.

2. I’m sorry for the mess.