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4 into 2 vs 4 into 1

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    4 into 2 vs 4 into 1

    I've got a 79 gs1000, and a buddy has an 82 gs1100.... I've got a 4 into 2 that looks like the factory head pipes with slip on mufflers. He's got a 4 into 1, we don't know what brand it is, but we know it was on a gs1000 before it was on his bike. I like the look and sound of his exhaust better than mine, and he's willing to trade. Am I helping or hurting my performance by going to his exhaust???

    #2
    4-1 is more efficient...however you may have to do some minor carb work or rejetting to run the proper fuel mixture. it might run lean with the 4-1 exhaust.

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      #3
      Please also note that some 4 into one exhausts are designed for looks and sound only and may have no effect on your performsnce or fuel mixture.

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        #4
        I can't be for certain, but is sure LOOKS like an old kerker

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          #5
          Originally posted by frigidmonkey
          I can't be for certain, but is sure LOOKS like an old kerker
          If you like the looks and sound, go for it and then read your plugs after a bit of riding. If the color is off then you will know what to do.

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