An Excerpt From The Attached Document
My primary objective in writing the Street Power series was to urge owners of mildly-modified bikes to think before they rush out and buy the latest "dyno-tested to give up to10 horsepower" doodad. In this series, I point out that, in my opinion, a lot of the conventional wisdom regarding performance mods is incorrect or misleading, and these often do not produce enough extra power to be felt on the street by the average rider.
So, before we go any further, let me say this: If you haven't made any significantchanges to your bike—meaning you’ve basically got a near-stock engine1, then trying toimprove the map file that was supplied by DynoJet is probably a waste of timei. Yep,that's what I said. A waste of time—and money. You may make some changes, and you may convince yourself that your bike is faster, but unless you're really lucky, you willhave screwed it up.
On the other hand, sometimes maps really do need to be changed. Maybe you've madesignificant modifications and the original map is no longer close enough. Or you thought you could build a better map than DynoJet did. Or something else; something that trulyaffects the amount of air your engine can move and make use of at a given throttle position. Assuming you really can tell that your map is not as right as it should be, here are some other reasons why that might be:
Your new pipes are not even close to the same type as those used while creatingyour mapii.
The map was built for a free-flow air filter and yours is stock, or vice-versa.
The map was built for a stock ECM flash, and you've gone to Stage 1 or more.
Your throttle body is larger than that used to create the mapiii.
Your dynamic compression2 is quite a bit different than that used to create the map.
You just couldn't leave well enough alone, and felt compelled to "make it better", soyou
SWAG'd a few changes to the map.
You get the idea.