MAP or MAF Sensor?

[barry_mann]

I have a 2008 Altima with the 4 cylinder. Does this vehicle have a MAP Sensor or a MAF Sensor. I thought every vehicle produced after something like 1996 was equiped with MAP sensors but i have a MAF on my vehicle. Do they have both or am i totally backwards on this.

[barry_mann]

and what is the boost sensor? Could this be the MAP sensor?

[windhaven]

I have a 2008 Altima with the 4 cylinder. Does this vehicle have a MAP Sensor or a MAF Sensor. I thought every vehicle produced after something like 1996 was equipped with MAP sensors but i have a MAF on my vehicle. Do they have both or am i totally backwards on this.

The 2008 Altima does have a MAF sensor, it resides just in front of the throttle body. As for a MAP sensor, I do not know. The MAF sensor is completely oriented towards measurement of airflow while the MAP sensor is oriented toward measuring Manifold Pressure. Similar, but in general two different things.

Hope this helps,-- Wind

[barry_mann]

I am trying to lean out the car. I know how to do this with a map sensor but with the maf i am unsure. If it gives an analog signal i think i can treat it the same way as a map sensor. If it is a digital signal, which it probly is than i will have to spend bucks to get some kinda reprogrammer or another adjustable ecu. If anyone knows a good way to do this let me know.

[Scandinavian Flick]

maybe i just dont know any better, maybe im not "in the know". but why are you trying to make the car run leaner?

[windhaven]

maybe i just dont know any better, maybe im not "in the know". but why are you trying to make the car run leaner?

Good question ....

Go too lean = burn holes in cylinder .....

-- Wind

[barry_mann]

I am in the process of installing an HHO kit. I have seen dramatic changes on my last vehicle, i just bought this one and wanted to do the same thing. The problem is the MAF sensor. Does anyone know if the MAF signal is frequency or by voltage? Or does anyone have a wiring diagram of the MAF sensor? I need to try to develop a system to help control this along with the O2 sensors.

[adidas2go]

The manifold absolute pressure measurement (MAP) is used to meter fuel. Cars that have mass airflow sensors (MAF), generally dont have a MAP sensor.

I am in the process of installing an HHO kit. I have seen dramatic changes on my last vehicle, i just bought this one and wanted to do the same thing. The problem is the MAF sensor. Does anyone know if the MAF signal is frequency or by voltage? Or does anyone have a wiring diagram of the MAF sensor? I need to try to develop a system to help control this along with the O2 sensors.

A standalone EMU going to be your easiest route to control those. The ECU in the new altima coupes is a BEAST. My turbo shop is having a hell of a time wiring in a tunning computer to it.

Wiring manuals - http://www.nicoclub.com/FSM/Altima/

If your worried about your fuel consumption that bad, I would go hybrid

[barry_mann]

The manifold absolute pressure measurement (MAP) is used to meter fuel. Cars that have mass airflow sensors (MAF), generally dont have a MAP sensor.

A standalone EMU going to be your easiest route to control those. The ECU in the new altima coupes is a BEAST. My turbo shop is having a hell of a time wiring in a tunning computer to it.

Wiring manuals - http://www.nicoclub.com/FSM/Altima/

If your worried about your fuel consumption that bad, I would go hybrid

That is what i am doing, going hybrid!!!! hahah, i know what you mean. But, they have alot more of a downside. They are slow, expensive batteries, very high sticker price etc, etc. If i can get pass this tuning issue i should be getting about the same MPG with less maintenace, less cost and a increase in HP. At least that's how it was in my last vehicle.

[adidas2go]

Cool, well good luck

[barry_mann]

I need to know which one is my MAF sensor. Right after the air filter there is a sensor with 5 wires. What is this called? then about 14" past that is an aluminum housing with i think a 6 wire plug. What is this called? Everyone i talk to i get a diffrent answer.

[08altima35]

if you go the opposite direction of air flow from your throttle body the first plug you'll come to is the MAF sensor. Dude???? are you sure you want to start messin' with your car when you can't find the MAF sensor. I think you should just enjoy the car for what it is and if gas mileage at a cheap price is really a big issue you could always trade in for a used 3cyl. yota echo and come out way ahead. just my .02centz

[adidas2go]

[Scandinavian Flick]

if you go the opposite direction of air flow from your throttle body the first plug you'll come to is the MAF sensor. Dude???? are you sure you want to start messin' with your car when you can't find the MAF sensor. I think you should just enjoy the car for what it is and if gas mileage at a cheap price is really a big issue you could always trade in for a used 3cyl. yota echo and come out way ahead. just my .02centz

i agree if you are not sure where the MAF is, id leave it alone... also the toyota echo has a 1.5 liter 4cylinder,

[cobradb]

Barry I too am on the same quest,, could you email [email protected]

david