i look to their website, coober is from Austria and somehow related to KTM.So far I have only seen three sets of dyno results for the 790
I have combined them for comparison
if one ignores the absolute measurement and looks at the HP shape
one can see the red and yellow follow a very similar shape
however the orange shows both lower power at bottom and higher power at the top
one can see gains buy all aftermarket mods
airbox, ecu, exhaust etc.
They have now Wings exhaust available with their ecu.
KTM 790 DUKE KIT - COOBER GmbH