Asked the same question a couple of weeks ago in the tune section,I have the full Zard so slightly different than yours, previously had the DP collector similar to the Zard under swing arm setup and currently running Hanso’s tweaked tune,seems to run ok but just feels a little flat lower down. Don’t seem to be many tunes for the pre Roadster models available unless any of the tuning masters in here can point us in the right direction?
Currently running the full Zard system and just waiting on some RU1770’s to arrive from the parcel fairy