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Good article, spent quite a bit of time with Mikuni's and Holleys years ago, before dyno's were so prevalent. It can be time consuming.
 

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Don't all the electronic fuel management computers in this thing maintain the proper mixture regardless of conditions? Otherwise, what is the point of the system? There should be no need for somebody to tweak it, correct?
 

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Generally FI systems can adjust for differences in altitude, fuel quality, etc but only up to a certain point that the manufacturer
believed would cover where and how the bike would be ridden. Also, the adjustments it will make will ALLWAYS stay within
the pollution requirements set by the Gov...
Aftermarket systems can be adjusted for custom pipes and air flow systems. Depending on the changees made, the stock system may be
able to keep it within the specs that Suzuki wants... but that may not be giving you all the improvement you could get.

For instance (not real #'s here)
If you were to open up the exhaust and air box and tested on the dyno before and after and you saw a 10rwhp gain...
If you were to use a programmer that could adjust the fuel/air mixture you might gain 25rwhp with the exhaust/airbox mods.

Sledzep
 
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