: MAF sensor readings/data


soundstudio315
04-03-2005, 09:39 PM
I was just curious if one can get the readings off the MAF sensor so that it sends the data to digital or needle gauge? Or can you put an air flow sensor some where an in the intake tract and hook that up to a gauge?

John Luttrell
04-03-2005, 09:56 PM
Would be difficult to do; it sends out a signal in milivolts. I would be afraid to tap into the MAF sensor wires do to the fact that any voltage drop would cause a drastic change in signal to the computer and effect drivability. Why are you wanting to know the readings?

soundstudio315
04-03-2005, 10:13 PM
Would be difficult to do; it sends out a signal in milivolts. I would be afraid to tap into the MAF sensor wires do to the fact that any voltage drop would cause a drastic change in signal to the computer and effect drivability. Why are you wanting to know the readings?

Just thinking about plumbing a functional hood scoop to the air box and thought it would be cool to have a something letting me know was kind of air flow I'm getting. Serves no real performance purpose but just an idea.

Think it would be possible to add 2nd sensor or would that a bit much :welder: ?
(even if I have to modify say a new intake tube)

soundstudio315
04-03-2005, 10:22 PM
all you need to do is get engine diagnostic software installed on your laptop and get an OBDII cable to plug into your computer. then thru the software you can see the readings from any single sensor and many other functions.

also, you can use one of those obdII scanners mechanics use. some of the nicer ones can display individual sensor readings.

Thats a good idea, but was looking for something that I'd be able to see constant reading from.

jwbronco
04-03-2005, 11:11 PM
Would be difficult to do; it sends out a signal in milivolts. I would be afraid to tap into the MAF sensor wires do to the fact that any voltage drop would cause a drastic change in signal to the computer and effect drivability. Why are you wanting to know the readings?

Actually the voltage goes up to 5 volts before it is considered pegged and you need a bigger MAF. Knowing the voltage can come in handy if you can map TPS,MAF, AF Ratio on a sheet for tuning purposes. If you have a supercharger it would be really good to know that your not pegging the MAF because after the signal forces the computer to use a preset table and bypass the MAF sensor.