Surging Idle After MAF Install...HELP

[Stang_Crazy]

I got my C&L MAF yesterday and got it in today. When everything was done and secure, I put the battery back in and fired her up. It was idling nice for a couple of seconds...right around 700 rpm, but then it would drop and almost stall. The rpm's didn't drop below 500 but the battery gauge was going wacky. At normal idle, it's one mark above halfway but when the car would drop rpm's, the volts would drop to a couple marks below halfway.

The idle was fine before the MAF and my new alternator was doing it's job wonderfully. Now the idle goes from 700 rpm then drops to 500 and almost stalls, then back up to 700, then back down. It's hard to describe...it sounds like I have a cam.

What could the problem be?? I never bumped my timing so I don't know what it's at. Other than that, I have no idea why the idle is surging. Any help is appreciated cause I'm stuck.