Rock2610d
Proven Member
- 255
- 4
- Jan 22, 2013
-
Cheyenne,
Wyoming
Well I have done alot of calculating, and have come to the conclusion that the air flow per rev data displayed in ECM link is NOT air flow per rev it is actually O2 per rev.
I had to calculate what my target air flow per rev is because I live at 7200 feet.
See attached spreadsheet for air flow calculations....notice how you have to multiply the results by 0.21, which is the amount of O2 in air, to get the number displayed in ECM link.
You have to divide air flow by 1000 rpm and then multiply by 750 rpm to get air flow at 750 rpm...then convert that number to gm/s and gm/rev.
If I am wrong could someone show me the steps to calculate correctly.
FYI my airflowperrev is .206! Not the .25 to .26 recommended in the videos for ECM Link.
I had to calculate what my target air flow per rev is because I live at 7200 feet.
See attached spreadsheet for air flow calculations....notice how you have to multiply the results by 0.21, which is the amount of O2 in air, to get the number displayed in ECM link.
You have to divide air flow by 1000 rpm and then multiply by 750 rpm to get air flow at 750 rpm...then convert that number to gm/s and gm/rev.
If I am wrong could someone show me the steps to calculate correctly.
FYI my airflowperrev is .206! Not the .25 to .26 recommended in the videos for ECM Link.
