That chart shows measuring result from standard exhaust before loading DNK map, doesn't it?
Haven't you load DNK map before modifying exhaust, then ridden? If you have done, how did you feel?
At this moment I'm going to load DNK map, keeping standard exhaust.
That's nice.
I don't like appearances of Platt pipes and Bugbike's, though they make the bike lighter. I prefer stock looks.
Your bike must lose weight by replacing catalyzer with your box while keeping good looks.