Hello Tcop, if you don't mind reading English there is an interesting thread from "intune" that has the Vortex installed and claims it feels 1:1. 
http://www.supermotojunkie.com…-ECU-on-KTM-690-SMC/page2
Beiträge von Spark
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Hi all, I hope I do not offend anyone by posting in English. I have been searching all the English message boards but there is hardly any talk going on about the 2012 Duke. Over the last 3 days I have been going through the 56 pages on the 2012 Duke thread with Google Translate and have picked up a lot of information. Is it not possible to buy the Akrapovic middle canister that they have on the Track version? This looks by far the best setup when combined with the Akrapovic silencer. They do not offer it in the Powerparts catalog, but does that mean it is not available at all?
