So i have a 99 a4 quattro with a gt3071r turbo with 440cc inj and matchin software from maestro 7. The car will idle perfectly until i press the gas. Then the rpms will fluctuate around 500rpms and then wanna die. Wideband says its running real rich. I tried doing the tba with maestro and vcds lite. But idk if i did it right. Help plz