If the MAF doesn't fix the problem don't rule out bad gas, the symptoms are the same. A bottle of octane boost in the gas tank will "improve" a bad tank of gas until you can burn enough of it down.

__________________
Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles