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[zirk]

Was having this discussion the other day with some Mates and where divided on the answer, so I'd though I'd ask here.

If you increase the cross section diameter (area) of a MAF sensor housing, would the sensor still read the correct air flow volume?

[Kevin Wood]

Was having this discussion the other day with some Mates and where divided on the answer, so I'd though I'd ask here.

If you increase the cross section diameter (area) of a MAF sensor housing, would the sensor still read the correct air flow volume?

No, because it's the velocity of the air through the housing and its' effect on the sensor element that it being measured. Different diameter means more air volume for the same velocity.

[zirk]

Thanks Kevin, that was my way of thinking, ie the sensor has to be calibrated to the given volume of air passing through it in order to correctly measure the air volume, the opposition was that it was irrelevant as the sensor will only measure air speed and the ECU is calibrated to work out mas air volume.

[cem_devecioglu]

Was having this discussion the other day with some Mates and where divided on the answer, so I'd though I'd ask here.

If you increase the cross section diameter (area) of a MAF sensor housing, would the sensor still read the correct air flow volume?

No, because it's the velocity of the air through the housing and its' effect on the sensor element that it being measured. Different diameter means more air volume for the same velocity.

agreed..  but lambda readings will correct ecu after sometime...

[Broomies Mate]

Was having this discussion the other day with some Mates and where divided on the answer, so I'd though I'd ask here.

If you increase the cross section diameter (area) of a MAF sensor housing, would the sensor still read the correct air flow volume?

No, because it's the velocity of the air through the housing and its' effect on the sensor element that it being measured. Different diameter means more air volume for the same velocity.

agreed..  but lambda readings will correct ecu after sometime...

The exhaust readings will have nothing to do with it.  The MAF script in the ECU will be quite precise..... anything above or below the 'required' level will turn a light on!

[cem_devecioglu]

Was having this discussion the other day with some Mates and where divided on the answer, so I'd though I'd ask here.

If you increase the cross section diameter (area) of a MAF sensor housing, would the sensor still read the correct air flow volume?

No, because it's the velocity of the air through the housing and its' effect on the sensor element that it being measured. Different diameter means more air volume for the same velocity.

agreed..  but lambda readings will correct ecu after sometime...

The exhaust readings will have nothing to do with it.  The MAF script in the ECU will be quite precise..... anything above or below the 'required' level will turn a light on!

why do you think there is a lambda sensor

[bigegg]

agreed..  but lambda readings will correct ecu after sometime...

The exhaust readings will have nothing to do with it.  The MAF script in the ECU will be quite precise..... anything above or below the 'required' level will turn a light on!

why do you think there is a lambda sensor
[/quote]

To adjust for engine and air temperature, which will change the volume of air for a given mass of air.

[Marks DTM Calib]

Maf sensors measure air mass by sensing the cooling effect of the air on a sensor, the sensor is normally internally calibrated so a voltage corresponds to a set mass. If the replacement sensor had the same voltage/mass ratio then no issue

[05omegav6]

So if you replace the intake with one that has the same cross section as, say a VXR8, then as long as you use the VXR8 maf sensor then all is well

[Broomies Mate]

So if you replace the intake with one that has the same cross section as, say a VXR8, then as long as you use the VXR8 maf sensor then all is well

I honestly wouldn't have a clue.  But judging by how quirky MAF's are on the Omega (same as most cars), I'd suggest it would be a pissing nightmare! 

[Kevin Wood]

So if you replace the intake with one that has the same cross section as, say a VXR8, then as long as you use the VXR8 maf sensor then all is well

I honestly wouldn't have a clue.  But judging by how quirky MAF's are on the Omega (same as most cars), I'd suggest it would be a pissing nightmare! 

... and a hiding to nothing. I very much doubt that the MAF airflow is the weakest point when it comes to breathing.

[Spireite]

I removed the mesh once on my vectra gsi, made a definite difference, elm light only came on when booting up a dual carriageway.  The square mesh must restrict by a third, but is designed to straighten out the flow of air, create smooth flow instead of turbulence.