Nissan 370Z Forum - View Single Post - Data logging MAF settings with Cobb AccessPort

Denny McLain · 09-28-2009, 07:01 PM

As usual, I'm a bit lost.

Someone pointed out the Cobb MAF air flow output goes flat right around 6200 rpm with right around 269 grams per second and stays there till 8000 rpm. Did a bit of logging today and that is consistent on every log I have including ones today. My question is does anyone think there is some type of flow restrictor or do you think it's the software? Even with a flow constrictor, my thinking is the GPS should increase, just not as much as w/o one. Anyone have a Grams per second/ Cubic feet per minute conversion?

Also, the thing is pulling out timing with 185 degree water temps, 90 degree air intake temps and 190 degree oil temps. Why it's doing this is still a mystery to me but my current train of thought obviously is that with the temps listed it has nothing to do with any of them.

09-28-2009, 07:01 PM	#1 (permalink)
Denny McLain Enthusiast Member Join Date: Feb 2009 Location: Double Oak Tx Posts: 255 Drives: 370Z, 96CE hotrod Rep Power: 16	Data logging MAF settings with Cobb AccessPort As usual, I'm a bit lost. Someone pointed out the Cobb MAF air flow output goes flat right around 6200 rpm with right around 269 grams per second and stays there till 8000 rpm. Did a bit of logging today and that is consistent on every log I have including ones today. My question is does anyone think there is some type of flow restrictor or do you think it's the software? Even with a flow constrictor, my thinking is the GPS should increase, just not as much as w/o one. Anyone have a Grams per second/ Cubic feet per minute conversion? Also, the thing is pulling out timing with 185 degree water temps, 90 degree air intake temps and 190 degree oil temps. Why it's doing this is still a mystery to me but my current train of thought obviously is that with the temps listed it has nothing to do with any of them. Last edited by Denny McLain; 09-29-2009 at 08:46 AM.