2000 Boxster MAF 125.01 - how to check if DME updated

[BIGJake111]

Bought a 124 part today for my 2000S with the last 4 in the vin being 0827, im hoping I got the right part.

[Fyeganeh]

Originally Posted by BIGJake111

Bought a 124 part today for my 2000S with the last 4 in the vin being 0827, im hoping I got the right part.

Here is the pelican parts link for installing and picking the right part:
Pelican Technical Article: Troubleshooting and Replacing the Boxster Mass Air Flow Sensor (MAF) - 986 / 987

[j.fro]

I've had MAF issues that could be 124/125.01/ECU related. My car was running with the 125.01 after the change and "update" (shop didn't get it right). During a Dyno test I discovered it was running lean. Chased the lean condition for years, and when I went back to a 124 the lean condition was resolved and the car ran much better.
Use your Durametric to check your pre-cat O2 sensor voltages. They should average 0.45, going up and down a bit. If they sit at 0.1 or less, you're lean.

[Fyeganeh]

Originally Posted by j.fro

I've had MAF issues that could be 124/125.01/ECU related. My car was running with the 125.01 after the change and "update" (shop didn't get it right). During a Dyno test I discovered it was running lean. Chased the lean condition for years, and when I went back to a 124 the lean condition was resolved and the car ran much better.
Use your Durametric to check your pre-cat O2 sensor voltages. They should average 0.45, going up and down a bit. If they sit at 0.1 or less, you're lean.

I tried it and got a sigmoid curve that probably averages around 0.45. Is this what it is supposed to look like?

[j.fro]

Yup, that looks good.