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Thread: running straight pipes

  1. #21
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    So, straight pipes or no???

  2. #22
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    a friend of mine ran no muffler on his buell because he liked the sound lasted one summer,start of this year it jetisoned rear piston, tried to warn him
    It was either unrelated or most likely wasn't tuned for the exhaust and running way lean. The rear cylinder runs hotter anyway and if you run a straight pipe without tuning it'll be extremely lean.

  3. #23
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    That's what my homemade pipe is effectively, Always remember to tune though. I had to tune it for the pistons and the exhaust.

  4. #24
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    I just bought my 08 xb12 a week ago. Other than the exhaust being "cored" as the seller put it. Its bone stock. I love the handling of the bike but miss the quick power off the line and/or on the strait away. I don't know where to start on fixing my dilemma.....exhaust, fuel module, what do I replaced first?

  5. #25
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    Air filter to start and tune

  6. #26
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    Straight Pipes FTMFW


    Talk about zombie thread...

  7. #27
    While my muffler was a Drummer, I rode a little with headers, out. Terrible. No top end. Gotta have some back pressure or your top end dies.

  8. #28
    Senior Member jetlee's Avatar
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    Gotta have some back pressure or your top end dies.
    No. Just, no.

    The 'backpressure' myth applies to low-end power anyways. It's the lack of scavaging that causes exhaust reversion and hurts the low-end output of the engine as a result of running too-large diameter header(s).

  9. #29
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    ^

    Why everyone give you crap jetlee? You post good info lol.

    Smaller diameter exhaust tubing promotes higher exhaust gas velocity which gives more potential to build power. The key is smallest diameter pipe while moving enough volume. There is a bit of a trade off with low rpm and high rpm. Low rpm you want smaller diameter and high rpm you want larger diameter.

  10. #30
    Senior Member jetlee's Avatar
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    Why everyone give you crap jetlee?
    I ride a Blast.

    You post good info lol.
    Thanks!



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