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straight pipes

  1. Engine, Carburetor, Fuel System & Exhaust
    I've got an '82 CM250 and am thinking about pod filter and/or straight pipe. It'd be a huge help if someone could just let me know what size jets to use rather than try a bunch of different ones. I'm at around 5,300 ft altitude (Denver/Boulder, CO) so there is already less air than there should...
  2. Engine, Carburetor, Fuel System & Exhaust
    So I want to run drag pipes, but I know there's the back presure issue, I've heard alot of you run freeze plugs in the end of the shortie mufflers, think it would work with drag pipes? Has any one ran them like this?