Quote:
Originally Posted by MetroMPG
Dredging up this comment...
I was under the impression that the Mirage's MIVEC valve control was infinitely variable because it's not a cam profile swap system like the older MIVEC versions (= VTEC for Honda fans). |
From what I've seen, there's a dip in the torque curve and a slight bump where the valves switch to "high lift."
Seen here at around 4k - 4.5k rpm:
(yeah, it's all a bunch of wavy lines, but you really feel it when you're banging through the gears on the racetrack!).
If the mechanism had infinitely discrete changes, that burp shouldn't exist. You should be able to adjust lift incrementally so the torque curve is smoother.
Take note, this may not apply equally to US spec cars, since the calibrations are different. And yes, it could be due to other things... but if it looks, smells and feels like "VTEC YO"...
