In Reply to: Differences between 98 and 99 540i engine posted by Andrew K. on August 13, 1999 at 01:43:47:
: The 97-98 models were rated at 310 lb-ft, and the 99+ models are rated at 324 lb-ft. What exactly did they change? Is the 4000rpm "power loss" that people here keep talking about common to both variants of this engine?
Intake VANOS added for MY99. Gives LEV status, increases maximum torque peak and moves it to lower rpm. I think the shape of the torque curve has also flattened, but I'm not sure. Anyway, result is better low-end pickup. HP max is the same as the MY97-98.