I'm not sure this is the correct area to post this, moderators please feel free to move it.
The bike is a bone stock CVO 103. Stock heads, cams and throttle body. Only changes is a true dual conversion kit and D&D 1.75 Police Interceptor slip-ons. Tuned with a TTS Mastertune - Blue Dongle.
The first tune was done by Bob Lobenberg in the bay area on a DynoJet dyno. The bike had a "Y" pipe and Bob got his readings off sensors he stuck up the tailpipes.
The second tune was done Gene Thomason on a SuperFlow Dyno. The bike now has a "True Duals" conversion kit. I made the change over after cracking my "Y" pipe. Gene got his readings off O2 sensors installed in bungs in the headpipes.
Both tuners are well respected in their field.
I'm not concerned about the numbers being different. I understand enough to know that numbers cannot be compared off two different dyno machines.
What I do find interesting is the curve. The tune by Lobenberg has a "Peak" at 4k rpm, where as the tune by Thomasen is "Flatter" from 3K to 4.2K, in what I call the rideability range.
My question to the dyno guys is, since the build is the same, could this be the result of changing from a "Y" to a "True Dual" conversion kit? I always heard that when going to "True Duals", one looses low end torque. Maybe I'm not seeing it here.
Any other comments?
Mark