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I ran a test on my engine stand with staged and unstaged fuel injectors but with the same fuel flow and MAP. The results are shown in the attached image. The engine is a 2010 2nd generation Renesis 6 port from an automatic transmission car with the
high RPM ports blocked off and stock fuel injectors. The reduction drive ratio is 3.18:1. The prop is a 3 blade 72" Warp Drive and was operating just below stalled RPM. A turbo is installed but no boost was used in the test. No attempt was made to operate
at minimum BSFC.
Steve Boese
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