Ej20g not running right/idle problems. Video included

[Shuttle]

Hi, i've been having some problems with my car recently, mainly that it will idle really rough and hesitate/sputter and misfire at load. I'm thinking it's the MAF thats gone bust so i've done a little video of the car running with the MAF connected and disconnected. But as with all things, i would like a little input before forking over the cash for a new one.

I changed the spark plugs yesterday, and cleaned the MAF maby thirty minutes before this video was done, i also fixed some leaks in the intake system yesterday.

I got my money on the MAF but prehaps someone here have had this or a similar problem before and may know something.

The car has a chip ( i do not know what chip it is since this was done by the previous owner), three inch catless exhaust, KN panel filter and i'm running about 0.9 bar of boost right now.

http://www.youtube.com/watch?v=z0KrFIy8Jqs

Update!

I replaced the MAF and it's running right again, scrapped the KN filter aswell

[mike-tracy]

Check the codes first!

http://legacycentral.org/library/literature/codes.htm

[Shuttle]

Check the codes first!

http://legacycentral.org/library/literature/codes.htm

Thanks alot for the site, the only code i got was 23 for the air flow sensor, but i think thats because i took it for a drive without the MAF connected.