No, the MAP. (Manifold Absolute Pressure)
See, I dont know squat about cars, I wont say
right/wrong to anyone, I'm just trying to dial
down my fuel air ration by putting
a potentiometer in serie with the variable signal comming
from the MAP, if there is non, it will indeed have to be the
MAF but this sends back a pulsed signal wich I can not just
dial down the ratios with a simple self/homemade thingy...

thanks.

Well, thanks for all the info so far...
What I am trying to do here is this.
I saw this website online www.water4gas.com
What you do is build a small device to produce
hydrogen on demand and have it sucked in with the
air intake, this is suposed to UP your milage dramatically
(between 20% and 50%) Not much but for the mpg's
we get in Stangs, but would be a great step...

The engine will sence more oxigen so it will
react by injecting more fuel as well. (cars are designed
to waste gas even if you ad savers on the engine)
What I want to do is make the computer believe
that the air fuel mixture is still the same, but have a
potentiometer somwhere installed in serie with the
right wire that comes from whatever decides the air/fuel
mixture so I can adjust up to a greater economy.
Does anyone have the schematics for the MAF sensor
in the MACH1 2004? (what is the function of each wire)
I gotta do the same with the 4 oxigen sensors in the exhaust
as well.

What do you guys think of the hydrogen with the air
idea? Would this work? All you inject is realy
Combusteble Air...

What I'm trying to achive here is: ADDING HYDROGEN.
(because this is a flamable gas) LEAN the A/F MIXTURE