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Carrera Exhaust

Engine

Vehicle Information: Model: Carrera; Year: 1986; Body Type: Coupe; Engine (type, size, modifications): 3.2; Total Mileage: 72000;

I currently have a stock muffler (1 in 1 out). I would like to change the exhaust to a 1 in 2 out. Will I risk loosing HP?. Only the muffler would change. The stock heat exchangers and cat will remain.Thanks for your answer.

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