i just got my tta runnin a couple weeks ago and ran really great,now the car started cutting out when tryin to build boost,changed coil pack and ignition mod with a known good one still the same,changed plug wires and then could build boost but after 10# it acts like somethin is grounding out,like 1 cylinder.my blm is 139 at idle af is 7.also changed mass air no luck,checked the grounds and cant find it.any ideas?