02-07-2009, 10:20 PM
Les,CV's 133 and 134 should take care of what you want to do as adjusting the chuff rate.CV 133 is the chuff rate and cv 134 is the gear or wheel ratio.That should fix you up.I'am happy to hear that you like the sound bug,everyone that i've installed them in their Loco's are very pleased with them. Harold