I just replaced my MAF sensor, this is the fourth, with a Hitachi MAF0052.
The first two genuine VW (likely made by Bosch) were replaced for mass air data being reported much lower than normal...which is 270 to 280 g/s in 3rd and 4th gears near redline. Those two dropped into the range of 220 to 230 g/s. When the second MAF failed, I suspected the oiled filter on my Neuspeed intake had caused this to those first two sensors. So I switched to a DryFlow AEM filter (made by K&N) when the 3rd VW MAF was installed, and the 3rd lasted a long time...probably since 2104 (though it had a manufacture data on it of 2011). I received the Hitachi (4th MAF) and noticed they scratched off the OE VWAG logo and it's VW part number. This is typical for OEM suppliers selling parts themselves. However, it did arrive in a Hitachi box. But still, always cautious about orders from Amazon sellers.
Why I got this 4th MAF was only due to fuel mileage and the cost of the Hitachi being just $113 usd, and I still may replace the B1S1 O2 sensor. I almost opted for the FCP Euro; Hitachi sensor at a cost of $142, just for their lifetime warranty. With most everything being replaced over the past two years, the fuel mileage was still a task to keep it over 26 mpg. Having to drive with a very light throttle...and no fun. Since replacing the MAF earlier this week, the mpg has gone from 26.8 to 28.8 in just three trips into town; going to the same places while making the same stops, while driving no differently. Each end of town is three to eight miles from home. I neglected to check the total miles it has stored in MFD/2, where it gets its mpg average from, but I haven't reset the MFD/2 since June's oil change. So it is increasing rather quickly. Eventually, I want to check the mass air data and will probably have a look at its fuel trims for any changes.
Just wanted to post this for those who know: their air inlet system is sealed, all hardware is fresh and functioning well, timing chain and VVT are still working well within spec....and still nothing else can be found to explain why your mpg suffers.
The first two genuine VW (likely made by Bosch) were replaced for mass air data being reported much lower than normal...which is 270 to 280 g/s in 3rd and 4th gears near redline. Those two dropped into the range of 220 to 230 g/s. When the second MAF failed, I suspected the oiled filter on my Neuspeed intake had caused this to those first two sensors. So I switched to a DryFlow AEM filter (made by K&N) when the 3rd VW MAF was installed, and the 3rd lasted a long time...probably since 2104 (though it had a manufacture data on it of 2011). I received the Hitachi (4th MAF) and noticed they scratched off the OE VWAG logo and it's VW part number. This is typical for OEM suppliers selling parts themselves. However, it did arrive in a Hitachi box. But still, always cautious about orders from Amazon sellers.
Why I got this 4th MAF was only due to fuel mileage and the cost of the Hitachi being just $113 usd, and I still may replace the B1S1 O2 sensor. I almost opted for the FCP Euro; Hitachi sensor at a cost of $142, just for their lifetime warranty. With most everything being replaced over the past two years, the fuel mileage was still a task to keep it over 26 mpg. Having to drive with a very light throttle...and no fun. Since replacing the MAF earlier this week, the mpg has gone from 26.8 to 28.8 in just three trips into town; going to the same places while making the same stops, while driving no differently. Each end of town is three to eight miles from home. I neglected to check the total miles it has stored in MFD/2, where it gets its mpg average from, but I haven't reset the MFD/2 since June's oil change. So it is increasing rather quickly. Eventually, I want to check the mass air data and will probably have a look at its fuel trims for any changes.
Just wanted to post this for those who know: their air inlet system is sealed, all hardware is fresh and functioning well, timing chain and VVT are still working well within spec....and still nothing else can be found to explain why your mpg suffers.
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