Jayhawk500 posted:I saw in a theard here a few years ago about enlarging the air intake hole to 3/16". I've done this on both of my engines that I modified with GRJ's Chuff Generator and Super-Chuffer. They really put out the smoke volume.
I do plan to make the modification on my tmcc units when I get around to them. Also looking into the super chuffer and generator for an C&O L1 Hudson build.