Well, we thought it was a blown headgasket, but apparently not. 89 GT Lebaron with an 88 TII Engine w/auto. We've checked timing, elec and mech, map, codes, vacumn lines are all new (did same thing with old lines), ran it on the 2.5l and 2.2 TII computers, wastegate can discoed, can hear turbo whine, still nothing. Any ideas?