Should I change the stock MAF settings (Mass Air vs Output freq) ?

I noticed on all the different tunes I've downloaded that people generally increase the #s on the MAF table. I don't have a ported MAF, but I have a CAI. I'm trying to chase down a pinging problem when I "walk" on the throttle while cruising. Thinking it's running lean, so change MAF settings?

I promise I'll get a wireless card for my laptop so I can show U guys my logs

Have a stock 5.3 MAF hooked up to a LS6 engine. HPTuners vcm suite.