Yes. The first three numbers are essentially the 'jetting', or more accurately the jetting changes, for the fuel injector. The first number is fuel added over the stock base map (pilot jet). The second number is fuel added at partial throttle (needle jet and clip setting). The third number is fuel added at WOT (main jet). The fourth number is used to adjust when in the RPM range the programmer takes over (8 is the highest number, meaning it takes over at about 2500rpm, giving up a clean lean idle along with the fuel we need above it since we don't lug our bikes that low). The fifth and sixth settings are the delay for adding fuel at the partial and WO throttle settings. Think of them as accelerator pumps to an extent, fine tuning these will increase ridability and smoothness of the power band at throttle changes but probably not affect power. They can also combat a lean condition at throttle tip-in if its a problem, I don't know if our bikes do that or not but some bikes (or cars or any other internal combustion engine) do. With the airbox opened up and a free flow exhaust, we need more fuel at low to mid throttle openings but don't need it at WOT as the bike tends to run rich even modded when wide open, hence the settings you usually see of 3 5 0.5 8 x x (everyone seems to like different settings for the last two, I ran 0.5 on both, others run 4, 8, 1 etc).