Thanks for helping me with the injector calculator. I left the constant at 61 pph bc I didn’t know that it had to be changed. You want to make sure that I know what I’m doing, the obvious answer is (not really). So with 350 hp the calculator says 109 pph, does that mean that I should change the constant to 109? I input 12 for old and 22 for new fp and I got a new flow rate of 24, what should I do with that calculation? Thanks for the help, I am enjoying the process.