BMW 3 Series Forum - Technical Talk on the BMW E46
318i 4 cylinder, 17 years old, 140,000Km.
When warm, flooring the throttle with no load would take revs up to 4,000 (no more) with vibration. Under load, acceleration was better at 1/2 throttle tham at full throttle.
Exhaust tailpipe was sooty.
Had a P0170 fault code. Checked all inlet hoses...