Re:Caveat Emptor (Score 1)

What you folks are describing sounds a lot like Honda's VTEC variable valve-timing engines - its in 4 or 5 different "sportsy" cars ranging from Civic Si's to the S2000. It uses camshafts with two different cam profiles, one that opens the valves more and for longer, and one cam profile that is more fuel conservative. The performance cams kick in at about 3500 rpm and the fun starts.

it's a performance compromise with fuel efficiency in mind that also delivers good performance. isn't that what your speedstep is?

blawson