should i replace my stock gm MAF with a high performance one? is it worth it?

 

i gained 1 tenth and .4 mph with mine im selling it to if interested

 

There is no such thing as a "high performance" MAF. The job of the MAF is to measure air flow nothing more, what you want is one that does that accurately which leaves unmolested GM MAFS, unless you have the ability to properly tune for a ported/modified which if you did you wouldn't have asked this question.

What the $300 aftermarket MAFs do is report FALSE information to the pcm trying to make it run leaner at WOT than what GM intended, thing is that the pcm learns it is being tricked and compensates, byebye minor power gain IF there was one. You can get more and better results and have them be permanent by reprogramming the pcm for the right AFR, which as luck would have it even costs less.
When combine with air flow enhancing mods the aftermarket MAF frequently cause drivability problems as well since the combination can cause things to get a little too lean(have even heard of one engine failure die to such). Frankly cease taking advise from anyone who tells you to use an aftermarket MAF, they don't know what they are doing.

 

Exactly what you said...

The only "Upgrade" I recommend, and only if the stocker fails or becomes the main restriction in the intake, is using a GM Z06 MAF, which requires the PCM to be re-calibrated for the new MAF to operate properly.

 

If a LT1 f-body MAF becomes a restriction than the ZO6 sensor is not going to help, it operates at a higher frequency than the LT1 sensors, the stock pcm can not understand it past about 350gps where it can understand the LT1 f-body one to well over 400gps.