| "Is it normal for the passenger side to be so much lower?" Yes, The IAC (idle air controller) is pulling air from the drivers side. Under medium to full throttle you'll see that the number are very close to the same "And why is the output not the sum of the two inputs?" 1.15v and .6v would equal 1.7 v. which is not equal to the amount that the engine was pulling when it was single pop(about 1.05 to 1.15v). MAFs have about a .5 to 5.0 volt sweep. about .45v is as low as they can go. You see .6 which is about .1v gain over .5v. That is added to your drivers side at idle. It is not a 1+1=2 formula the though. Also note that Dual MAF tends to run richer at WOT and you will most likely need to pull fuel in response to your wideband 02 readings.
Formerly SpecNATT (Houston) |
