Hi.
I put one in my 03 2.7 986 today, had it in my tool box for a month + now, but after reading this thread I decided to try the new one out even though my old one is still working fine.
Had a problem with my MAF and it put my engine managment light on, that was confirmed by a good independent Porsche garage about a month ago, the cost of a new one from a OPC would of been in the £100's so me being a tight bugger thought i'd cleaned it with carb cleaner first, and it's worked fine ever since, however when the engine management light came on last month I thought I might need a new one so I found this Maf on eBay:-
PORSCHE 911 996 997 BOXSTER 986 MAF MASS AIR FLOW SENSOR 0280218055 98660612500 | eBay
Item number 370874725806 cost £29.99p not sure how much that is in US Dollars.
Well took the car for a test drive and it drives sweet as anything, no idling problems, no miss fires, pleanty of power, in other words runs perfect.
I will be watching my fuel economy on the trip computer see what i'm getting now mpg as it was on 30.4/7 with the old one and that was on it's way out, will keep you posted when I've done a few more miles to get a good average read out on mpg.
The numbers on the mafs :-
Old one taken out was a Bosch one 986 606 125 01
New one in now has no makers mark on it but the eBay add gives the following:-
Porsche part number 986 606 125 00
Bosch part number 0280218055
Like I said working fine just need to keep an eye on mpg
Guvs
PS
Forgot to say they even give a 2 year warranty with it.