Originally Posted by tomctx
Actually, according to the Bentley, VANOS is there to enhance mid-range performance. To quote from the book:
"At low speed, the intake valves open late to ensure smooth engine operation. At mid-range speeds, the valves open early, for increased torque, improved driveability, and reduced emissions. And at high speeds, the valves again open late for optimum power and performance."
The horsepower and torque figures for both engines are exactly the same, 189hp@5900, 181ft/lbs@4700. What I would like to see is a graph with the hp and torque curves for both engines. That might lay this controversy to rest. But then again, probably not.
The non-vanos has always been a torquey engine off bat. The graph would definately help solve all this. Thanks for the info on the vanos setup. I knew I was close, but you defined it perfectly. Thanks.