Nissan 370Z Forum - View Single Post - GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS RELEASE

Kastley85891 · 03-09-2010, 11:06 PM

The air at altitude is less dense , so is less powerfull.
Any FI system will have to work harder to meet the same levels of pressure in terms of boost in relation to a sea level vehicle.
The MAF Sam refered to measures the amount of the air passing through the intake/s in a V format, that is directly related to an ECU scaled table that takes that V and performs a look up / calc to see how much air actually is going in, it uses that figure to throw in the correct amount of fuel to meet the fueling targets.
Thats it in a nutshell, but to meet fuel targets accurately there is a lot more then MAF V / air flow alone.

03-09-2010, 11:06 PM	#233 (permalink)
Kastley85891 A True Z Fanatic Join Date: Nov 2009 Location: ATX 370 - Sold Posts: 1,149 Drives: 2003 Wagon Rep Power: 18	The air at altitude is less dense , so is less powerfull. Any FI system will have to work harder to meet the same levels of pressure in terms of boost in relation to a sea level vehicle. The MAF Sam refered to measures the amount of the air passing through the intake/s in a V format, that is directly related to an ECU scaled table that takes that V and performs a look up / calc to see how much air actually is going in, it uses that figure to throw in the correct amount of fuel to meet the fueling targets. Thats it in a nutshell, but to meet fuel targets accurately there is a lot more then MAF V / air flow alone. __________________ Boosted V8 hunter 2850 lbs and 375WHP