99 A4 2.8

Maf was acting up so i unpluged it for like a months ran fine but lacked performance.
so i figured id clean it with isoprol and salt, pluged it in nothing.
so i ran it unpluged for a nother month.
cleaned it again with some throtle body/ intake cleaner
and boom it worked great for a month and a half until now im getting the maf
cel along with 4 other every now and then.

bought a new maf sensor pluged in today and it started but it revs it self when i push in the clutch, and stuggles in first and occasionaly shuts of
when at a stop. it also sputters anytime i let off the gas.

the replacement i bought is a low end no name sensor could this be the problem?