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How about some advice...My 93 chevy k2500 has a 350 in it. Someone put a smaller muffler and single tail pipe(I'm assuming from a 305) on it. I know this engine is not a powerhouse but it really feels soft and the mpg isn't very good. I'm thinking that I need to pull that muffler and single tail pipe and put on something that will breathe a little better. I'm assuming it came with a 3" exhaust with dual tails from the factory.
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