Baffles - is removal bad for the motor

Discussion in 'Dyna Models' started by mder123, Aug 12, 2010.

  1. mder123

    mder123 Banned

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    Ok I have a 2004 super glide carberator with screaming eagle after market exhaust. I removed the baffles.... Sounds awesome, but I was told its bad for the motor, a "back pressure" issue........ Is this true?
     
  2. Iceman24

    Iceman24 Well-Known Member

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    Plus, you're robbing performance from the motor so best to run w/baffles, or find louder exhaust to suit your "auduble" taste.
     
  3. BUBBIE

    BUBBIE Well-Known Member

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    YES
    Removing baffles reduces Needed back pressure on the motor.... You can compensate for the loss by putting in stainless "reversion cones" into the head pipes and Also you will need to Richen the fuel mixture a bit.

    I out grew the need for Wrongly Modified LOUD exhaust and just go with the exhaust that Performs good.. You can get LOUD and still have the proper tune... It just cost $$$..

    I have use the "cones" and it helped.... I also had them in a 2000 TC and ended up removing them and just installing Python 3's then re-jetting the carb back for a great performing bike.

    signed....BUBBIE
     
  4. BOBFLHTC

    BOBFLHTC Active Member

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    I tried puching out muflers, removing baffles, making baffles etc without producing the sound and performance I wanted. An exhaust may just look like a glorified piece of chromed pipe but there is a whole lot of technology in the design. I did get an education and some respect though but in the end I purchased a new 2 into 1 system - Bob
     
  5. glyd-n

    glyd-n Junior Member

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    Check out Big City Thunder. They have all types of baffles that will give you the desired sound as well as the needed back pressure.
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    Not a good idea and the sound to you might be OK but its running too lean:s
     
  7. rancid

    rancid Active Member

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    an exhaust doesnt need any back pressure, backpressure is the enemy of a working exhaust. it doesnt need back pressure to make torque, it doesnt need back pressure for good bottom end power what an exhaust needs is the right sized headers.
     
  8. rancid

    rancid Active Member

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    if you insist an exhaust needs back pressure read this, RB Racing LSR 2-1 Exhaust Technology rb make some of the best "street pipes" (as well as drag pipes) around but i guess they dont know much. ive built pipes for motorcross bikes, harleys, and worked with car exhausts aswell and an exhaust DOES NOT need back pressure, low pressure=high flow, correct header diameter and length with, not back pressure but, vacuum will work safely on any engine. the exhaust just has to be somewhere close to matching the engine.
     
  9. ultrat

    ultrat Senior Member Contributor

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    what i have come to understand Chevy's need b/p, fords don't, Now i know these ain;t Harley's maybe it the way the head is designed..
     
  10. rancid

    rancid Active Member

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    the difference there is they use different firing orders where chevs work better with a balanced exhaust, and fords will work well unbalanced, the balanced exhaust will help scavenge with the firing order between left and right banks.