Curious as to what map anyone else is using that has put two brothers shorty slipons on their gen 1. I have a 2006 busa that is all stock except for the titanium two brothers shorty slipons. I see on the Dynojet site that they have a map for a 4 into 2 two brothers set up. Not sure if this is for a full system or what. My bike seems to have a slight stumble at low rpms since putting the shorties on. I'm sure a pclll wouldn't be a bad thing.