[Dan03mach]

Originally Posted by Mach828

I was under the impression you tune the entire maf curve for stoich initially. Leave the base fuel table at lamba for all of the low load and low throttle position. Adjust the maf transfer function in open loop until its darn near 14.7 under all part throttle driving and project the trend to conditions you can't datalog at cruise. Then adjust base fuel table high load/ high throttle position to what you want at WOT then readjust the maf transfer until you see your commanded lamba. I guess you could just leave it all at lamba and just continually ramp up the maf but then the system is less adaptive/dynamic.

You are correct but the thing is the higher the load the more fuel you want so you do not want that at lambda across the load range of the motor and as you go higher in the load range your computer switches from closed loop using the basefuel table to open loop using only the commanded setpoint in the maftransfer function for the load the maf is seeing at that load range and as the load range increases you will need to add more thru the curve to insure your A/F stays at your desired ration thru out the whole cure at full load under WOT.