I have a 2006 Yamaha R6, it's got around 25K on it. When I bought the bike at around 22K it had a Graves megaphone exhaust and power commander. I checked the documentation for the PC and it said to use the default map for the Graves so I assume that's what it's currently set at. I recently did an exhaust swap to a Yoshimura TRC slip-on about 2 months ago.
I feel like the bike was riding well the first month and a half. But in the last 2 weeks I think I noticed a problem with really low power after startup. For the first 5 minutes or so the bike is extremely weak in the low range. For instance, when I pull out. I start the bike up and immediately go out. The bike is fuel injected so I don't warm up or anything, I kick it into first and pull out at 5-15km but for the first 400m or so I have to pull back the throttle probably 2 inches further than it should be at that speed. Then as the revs go up it seems to catch up and after riding for a bit acceleration seems more "normal".
Has anyone else experienced this phenomenon and have an idea what could be causing it?