I've been working on an Excel product to help myself and others simplify the conversion process when tuning. In the file there is an injector flow rate conversion, input the injectors ratings and your fuel rail pressure and it gives you the inputs for HP Tuners. Also included is an auto VE map generator, you just input your LTFT, STFT Histograms, and Current VE Primary Map and it will generate your new Primary and Secondary Map (I have it rated at 50% correction so when you retune it does not completely overshoot). Also coded in is if the total fuel trim isn't off by over 5% then it will not include a modification. There is also a page that shows you what areas you still need to data-log called STFT Still Need to Fill, the red blocks highlighted do not have a STFT rating of under 3%, meaning the LTFT hasn't completely been learned yet.
Please feel free to try it out and give me feedback of what you like about it and what you don't like about it. If there are any other useful conversions that could be added please let me know also. I'm new to tuning and currently still learning the entire process.
HP Tuners Workbook.xlsx