Blacktop SR20 idle issue

[ochocinco666]

Blacktop sr20det
Just recently installed:
garrett 3071r turbo
550cc injectors
z32 maf
rs enthalpy tune

Started my car up today after just getting my tune and my car is running rough. At start up the car runs at 1000rpm and stays there, but is idling a little rough almost like its misfiring. Then i give it some gas and then the car drops down to 500 rpm and then goes back to 1000rpm and just pulsates between 500 and 1000 then eventually dies after a few times. Any ideas?

[ochocinco666]

Fixed my idling problem. My maf had a bad ground. Now that i got it idling, my car is misfiring and is running very lean, doesnt register on my afr gauge. I checked my fuel pump for pressure and volume and both are good. Checked coil packs and injectors and both are good as well but when i crimp my fuel return line the car runs better and my afr gauge is reading 16s. Anyone have any idea whats going on?

[zneubauer]

timing could be off.

[ultimateirving]

Also with ur MAF ground bad, can u also confirm the signal been wired correctly? Running lean at idle is not as common with SR's they like to run rich more often.

Timing is a good place to start, also double check to make sure the plug is completely seated on the ECU, verify no loose pins on plug connector too.