lloyd, you could start with "you oughta be running a stock setup anyway..."
I'm so misunderstood.
But, if you're going to pick on me, I'll share my thoughts.
So, far the only predictable jetting info is from Honda's extensive testing and jetting selection with the stock components.
Most questions seem to ask for the easy way out for carb jetting or to get the best operation from their modified bike. I simply maintain that the fastest, simplest and surest way to get to that "best streetable performance" goal is to return to stock and use Honda's settings. That formula pretty much guarantees success with a minimum of frustration, and minimizes a needed learning curve for the tuning art.
I'm thinking you guys are underestimating the amount of variables in the end chart. To get an idea, just start making a list of all the SOHC4 Hondas (number A). Then list all the header examples (number B), then list all the muffler examples (number C), then list all the air filter examples (number D). Your chart is going have a data entries for AxBxCxD. If we choose an arbitrary number of 10 for each entry, that's 10,000 entries. Each time you add another variable or range of variables, you multiply times the previous number.
The chart gets pretty big and unmanageable rather quickly. Note I have assumed that say the manufacturer of a muffler has a recipe that makes EXACTLY the same muffler in restriction and flow characteristic for each and every muffler they make. Or, no variability between samples of product. I can't believe a cheap muffler such as a Mac type has quality control measures to ensure each muffler flows exactly the same (another variable multiply by the range of variability). Same is true for air filters. Are they all packed with the same length size and density of filter material? Each variability of example adds another range of multipliers to the chart.
Then there is the criteria for success. The variabilities of Temp, Baro pressure, and humidity all effect performance benchmarks. Who's going to tabulate and normalize the performance data and how is it measured? I don't want to be demeaning, but "it feels better" is a statistically insignificant attribute, sorry. There are variations between Dyno machine calibrations. How do you account for variations in seat of the pants feel? And, how well does it have to run before it runs "well enough"? Then there are jets that have been drilled or bored when cleaned which don't actually match what their stamped numbers indicate. And, what do we know of slide needle profiles both stock and aftermarket?
Even if every member contributed their setup with 100% accuracy, we would have about 1600 entries, which is probably much less than 10% of the possible variations of build setups and jetting. Do you really think that the next custom build will be exactly the same as one of these entries? Seems statistically unlikely. Customs bikes are based on individualism, no?
Without precision measurement tools, and standardized components of known dimensions that can make the chart a science, we'll have a tuning chart based on artistic interpretations, rather than engineering specification.
I think custom bikes need custom jetting. Specific tuning charts and specifications are for mass produced machinery.
Finally, in all my engineering days of lab experimentation a cardinal rule is that a working test case example of one, while promising, is not conclusive proof of concept or mass manufacture (worthy of copying). Just because you've built an example of one machine that works perfectly (usually after many adjustments), does not mean all machines built similarly will behave the same (variations of components). If my homemade recipe works 95 out of a hundred times. Are you sure you didn't build 1 of the 5 out of that 100 that doesn't work the same? And, when it doesn't, what will you say of my recipe?
I'll watch this thread with the greatest hope. And, wish you all well with the endeavor. Don't let me discourage you. That's not my intent. A project's success can be better predicted with good preparation. I just think you are going to learn something you didn't expect to learn during the project. And, that can be valuable, too.
Cheers,