Gnarly,

Do any of your computer dyno runs show the 'dip' I usually see in the dyno run I usually see around 3k +- rpm for various vehicles?

This is for my Sportster (883):    first is dyno at dealer, second is something called a 'road dyno' (search images 'road dyno software')






I've used the 'road dyno' on my 86 22RE truck and 64 Plymouth Valiant slant 6 225, and they both showed the 'dip' (don't know where I put the .jpg of those) that DON'T show up on a computer simulation (Desktop Dyno 2000 & 2003)