Just made this great wheelie.. did you see it?!
Join Date: Aug 2010
Location: Salt Lake City, UT
I've been dealing with similar issues and have kind of learned how to adjust it myself. The buttons aren't a very good option to actually tune it but if you are trying to figure out if your too lean or rich at a certain rpm range they work well. If your bike is running fine I honestly would not mess with it without a dyno. My bike just started running lean all the sudden so I had to mess with the tuning cause I can't afford a dyno either. What I have learned when it comes to tuning with the PC3 and making fuel maps:
Find the closest map to your setup or the map that you run the best on and work from there.
All the numbers on the map obviously represent how rich or lean you are. If you increase the number your going richer, if you decrease the number your going leaner. For example, 2 changed to 4= richer, -20 changed to -18= richer, 3 changed to -6= leaner and so on.
The colum down the right left side, obviously rpm, the row along the top is the throttle position in a percentage.
I rode my bike and just tried a combination of different throttle positions and different rpm ranges and got a feel for where it was lacking power then adjusted the map at those rpm ranges and throttle positions. If you adjust it and it seems to be running worse you probably adjusted it in the wrong direction, just readjust in the other direction and see if you feel a difference. For me it worked best to test this in first gear because thats where i can feel the most torque and pull and where I notice the biggest change when my bike is running poorly.
This worked for me cause my bike was running like total shit and I could tell a huge difference when making changes. If you just want to fine tune it you may not be able to tell a big enough difference to make any beneficial adjustments. If you mess with it a bit and don't feel like you've made a difference or you get your bike running worse you can always flash the tune you started with that you know will work ok.
A few things i woudl recommend, use Microsoft Excell to help make and track your changes. You can copy and paste the entire table from the PC3 software to Excell and then from Excell back into the PC3 software. This makes tracking and making your changes MUCH easier, elpecially if you know a bit about using formulas in Excell.
and an important warning. Your not going hurt your bike making small changes to see if you can feel more power but make changes in small intervals, especially when going leaner. If you go way too lean you can cause predetonation and damage your engine but if you go in small intervals and pay attention to your bike you'll be able to tell it is running like shit before you get to that point. If you hear pinging your way too lean.
Hope this helps, again the best bet is to get a dyno tune when you can afford it but I can't either so I totally understand.