Best values for Power Enrich Fuel Multiplier vs. RPM
06-28-2007, 10:36 PM
#1
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Best values for Power Enrich Fuel Multiplier vs. RPM I am looking for good values for best power from idle to redline.
What woud the best AFR's be across the board.
Thanks guys,
Fil131
What woud the best AFR's be across the board.
Thanks guys,
Fil131
06-29-2007, 11:15 AM
#3
It depends on your car. You need to connect a wideband and stap the thing to a dyno to determine this.
In a perfect world the PE table is suppose to indicate the actual a/f ratio of the car via some funky lamda math.
AirFuel = 14.7 / PE
Being 12.8 is the optimal WOT a/f all PE values should be 1.148 in a perfect world.
However, this is not a perfect world and the above is rarely the case. You need to hook up a wideband to determine the best PE values for your car.
In a perfect world the PE table is suppose to indicate the actual a/f ratio of the car via some funky lamda math.
AirFuel = 14.7 / PE
Being 12.8 is the optimal WOT a/f all PE values should be 1.148 in a perfect world.
However, this is not a perfect world and the above is rarely the case. You need to hook up a wideband to determine the best PE values for your car.
06-29-2007, 05:59 PM
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Originally Posted by NoGo
It depends on your car. You need to connect a wideband and stap the thing to a dyno to determine this.
In a perfect world the PE table is suppose to indicate the actual a/f ratio of the car via some funky lamda math.
AirFuel = 14.7 / PE
Being 12.8 is the optimal WOT a/f all PE values should be 1.148 in a perfect world.
However, this is not a perfect world and the above is rarely the case. You need to hook up a wideband to determine the best PE values for your car.
In a perfect world the PE table is suppose to indicate the actual a/f ratio of the car via some funky lamda math.
AirFuel = 14.7 / PE
Being 12.8 is the optimal WOT a/f all PE values should be 1.148 in a perfect world.
However, this is not a perfect world and the above is rarely the case. You need to hook up a wideband to determine the best PE values for your car.
06-30-2007, 12:02 AM
#6
TECH Senior Member
WOT 12.8:1, I usually add extra fuel at peak torque (highest cylinder pressures) and lean it out a little at peak horsepower
normal driving, closed loop should keep you at 14.7:1 or so
normal driving, closed loop should keep you at 14.7:1 or so
07-02-2007, 08:30 AM
#7
Originally Posted by Country Boy
If youve tuned the car right, that is always the case. All my cars AFR is exactly what is commanded.
It may apply to a vehicle where someone has spent the time to dial in the MAF, VE Table, IFR, (like yours and mine). However, the average Joe's car is not like this.
Inferring to people that they can just put 1.14 into the PE table and get an ideal WOT air/fuel ratio is misleading for most.
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