Since our cars have both a MAF and a MAP... and the MAF is before the MAP what would happen if we were to unplug the MAF? Could this help or hurt anything? Just sort of curious for future modifications... If this could be possible with no side effects we could then in theory place the filters right on the intake of the turbos and not need any intake piping or air box... Kinda new please dont yell :P

 

You're going to need the maf, Can't just unplug it.

 

Interesting, to say the least. why do you need the MAF? i thought if you unplugged it the car would tune itself off the map sensor.

 

^ if it was that simple^ unfortunately its not, the ECU needs that signal to setup the fuel air mix

 

I was right there with Superdug, and yes i got curious last night and tried it, didnt drive anywhere but i did start the car, rev it a couple times just to get a feel, then while it was running unplugged it and it stalled for a second and then idled normally and i went back to inside to test the throttle and gave it a couple revs and sure enough it did just find, i didnt drive anywhere and i plugged it back in then posted here to see what some people would say.. so i guess the question is, is there anyone out there that is NOT using there MAF?
Thanks for your feed back GeilKyle2 but im also looking for reasons? Not just answers.
Avant80@2.6, wont the MAP set up the fuel air mix?

 

omg that's the most retarded thing I've ever heard

do you know what OBD stands for???

 

Yea On Board Diagnostic, what does that have to do with anything? Obviously something so would you enlighten me

 

When cars made the switch from carbeurators to fuel injection the mixture was done electronically instead of mechanically, obviously, because of the ever increasing emissions regulations and engine performance could be measured much more accurately. To keep it short, there are a number of sensors on the car needed to measure everything from crank position, airflow, throttle position, and oxygen output. These sensors relay the information to your ECU and there are a series of programmed graphs. It takes the information from the sensor, transfers it to a code readable by the computer (not a voltage or current flow output which is how they are usually measured) and it compares the data with the graph and comes up with a solution. So if you have X amount of air flowing into your car with your throttle open at Y amount, it will find how much fuel is needed. Blah blah, REAL vague explanation, but of course your MAF sensor is a way of computing how the engine must perform, there is also a Mass Air Pressure sensor, but both are used to help the engine run smoother with greater accuracy. Taking away one does not subsequently make the other "take over", or else they wouldn't have one to begin with.

 

You can drive the car with the MAF unplugged. It will not run as well, but still run fine, of course throw a CEL. When the MAF goes bad the system ignores it & runs off the MAP.

It's also another way to tell if the MAF is bad, some times it will not throw a code, so if you unplug it & the car runs better then the MAF is bad.

 

i tought that MAP stands for "manifold absolute pressure"