Philip that is a good way to ccontrol flow. I have made many stepped over the years. They left me with uneven performance. I now use the Auamist high speed valve tied into fuel injection duty cycle. It gives a smooth progression in flow based on engine load. Fuel flow is based on engine load at every rpm. This has proven to be the easiest and smooth operation. We started tieing the high speed valve into injector duty cycle about 1999 have has been involed in over a 100 installs and upgrades.
The biggest thing is to use the correct amount for your engine, do not get too hung up on the math. Work with engine performance.
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Brad
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