Ok, so I thought I would give a little write up on my experience. The last few months my 03 4.4i w 80K miles was running sluggish, the rpm's were slow getting up and felt like the car was bogging down, almost as if i had a small trailer i was towing. I could sense this from 0-30mph after 3rd or 4th gear the truck would rev and accelerate like a champ. So I decided for $155 via ebay Germanautosupply I got the Bosch MAF. It took me almost 45 minutes to weasel the old one out, this required loosening air filter box, and the big hose with a flat screwdriver and wiggling. Hardest part was removing the damn connector as I don't have enough strenght to squeeze the tabs, so I used a flat screwdriver and pushed it from the bottom and out and this loosened it enough for me to pull the connector off the flow meter. After installing it back and took it for a spin, the rpm's were crips and fast, the car was now running like 8 cylinders instead of 7!

__________________
2003 BMW E53 X5 4.4i - M62 engine (Non Sport with Premium and Cold Weather Package)
Color: Steel Gray Metallic
Mods:4.6is Exhaust (Pipes, Mufflers and chrome oval tips) BMW Sport package Taillamps, BMW Tire Valve Stem Caps
Medium tinted front windows
JVC HD Radio
Alpine 4x100 channel Amp
Orion 600W Mono HC Amp
Three 12" Sony Xplode in subwoofer enclosure