I have my datalogger setup to display fuel flow in GPH. I don't think the Dashdaq has the capability to display it, but you can do your own calculation. Then, once you know fuel flow, you can refer to the post by 70GS455, https://www.crossfireforum.org/forum...el-system.html and reference the nice graph he made to determine your injector duty cycle.

This calculation is a rough estimate only.

Here is what you need to log and the calculations to determine fuel flow:

Log: AFR, MAF and boost (Yes our ECU's determine MAF, but we don't have a MAF sensor. You need to know boost for referencing the graph.)

Density of fuel: 720 g/L (grams per liter) (This is what is used in the software I have. Fuel density varies with temperature and composition. I've seen ranges of 710 - 770 g/L)

Fuel Flow (in grams/sec) = MAF/AFR
Fuel Flow (Liters/sec) = Fuel Flow(g/s) / 720
Fuel Flow (gallons/sec) = Fuel Flow (Liters/sec) * 0.26417
Fuel Flow (gallons/hr) = Fuel Flow (gallons/sec) * 3600

All in one equation:

Fuel Flow (gallons/hour) = (MAF/AFR)/720 * 0.26417 * 3600

Based on these calculations, my car has been flowing around 34 gallons/hr at the top of 3rd gear in the 1/4 mile at 18 PSI of boost.

Referencing the graph in the linked thread, my injector duty cycle is right around 80%. I will need to add a fuel pressure sensor to get even more accuarcy.