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actually the big ones keep the rpms up once they are up in a heavy vehicle. in a quick revving lighter vehicle you want the small one but in heavy truck you want the big one
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.
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