I ran my nistune and there were no ECU codes, so i'm trying to figure out why my drivers side puffed out black smoke for a bit (no consistent but when i go WOT for a few seconds) then it goes away...my log file from nistune is below (unfortunately no wideband only stock O2, plus for some reason my speed didn't log hrmm) i had a leak in my pass side exhaust before my muffler and i just recently fixed it but i don't know if im still puffing out black smoke but could that cause my driver side to run rich? (don't see how that might tho)