General Injector Duty Cycle Calculator

[doubleclutch]

Hey guys,
I recently completed a Evo 3 16g swap and I am in the process of tuning the car via ECMlink. I currently run stock injectors and stock fuel pressure. These factors led me to try to figure out at certain air/fuel ratios, what are my duty cycles and how far can i turn up the boost before i can no longer achieve safe air/fuel ratios. This led me to create a workbook to help visualize it all. Please take a look and tell me what you think!

It also reports "approximate" power values. In addition it could be used to size a turbo also based on the flow rate required. If it is accurate, which i believe it is, it would eliminate hunting for calculators online for each thing, and help eliminate the endless noob questions of "what turbo?", "how big of injectors do I need", and "how much power will I make?"

 

[J Fresh]

This is great! Im currently about to do the same as you, upgrade to the B16G and am just doing my homework. I just need a FMIC and DSMLink and Ill be ready to install everything and start the calibration process before tuning.... thanks for this reference sheet!

 

[doubleclutch]

No problem. It seems to be relatively accurate based on the data i have seen in link for my car. If enough people verify it maybe it can be a sticky so we can stop the "what injectors do i need posts" and random speculation on what we think is best.

Good luck with the build!