you may find a dip in the torque on your low end if you dyno... but in my experience, it varies from bike to bike.
You will get a dip in your TQ curve. Look at attached sheet. This is my 07 with the Rinehart 2-1. Still love this pipe with the dip. Think this winter I'll add some torque cones and see what it will do to the dip. It makes great power as you can see. I tried to make it rich in the dip area to get rid of it. Didn't work