[ultimateirving]

are u sure you wired the z32 maf correctly. Also to make sure its not the maf u could also try taking it off and see if it idles any better.

One thing that happened to me when switching tunes my ECU plug wasnt all the way tight and it was causing my car to idle like sh*t and misfire left and right. I was pissed because i literally changed the ROM chip and nothing else, then after like a few hours of trying this and that i took off the ECU again, reseated the chips and tightened it back up, and viola. my car was idling back to normal.