Hi guys,
I was under the impression that when you do a stand alone software upgrade by VAP or other tuners, it bumps up the horse power in the range of 45 - 50 hp. Viezu did a decatt, upper pulley and software tune. All of this has a gain of 48 hp. Why so little in power gain.

 

Maybe the upper pulley change is a typo? I had to listen very closely as I'm not from the same country as his accent, but he doesn't seem to mention it in the intro.