B5 Garage
99 aeb giac w/no turbo power. Have to really flog it to get up a small incline. Pulled these codes 16806 (o2 sensor), 16518 (bad cat?), and 17965 (overboost). For the 17965, someone mentioned testing the n75 valve, and I got 34.5 Ohms (engine off). It is at the top end of the scale (25-35 Ohms)...