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Old 09-11-2014, 10:19 AM   #122
Mikem53
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Quote:
Originally Posted by DeeezNuuuts83 View Post
I remember reading about that. I assume that the 2014 has the proper Skyactiv headers, correct? I think it had something to do with how the headers wouldn't fit in the engine bay of the previous model, so hopefully Mazda fixed it, though the hp and torque figures are about the same as before, so I'm not sure.
The prius uses an Atkinson cycle engine, thus the high CR on regular fuel without detonation or pinging.
It uses weird valve timing techniques to accomplish this.
The Atkinson cycle is tuned for efficiency, not power.
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