is mivec a performance thing?

[spyghost]

Hi,

mivec is for mits, vtec for honda, and a whole lot for other manufacturers. the question is, do these valve timing/valve clearance adjustments offer performance gain once the threshold is met (except for continuous variable ones)? i mean, what are the intentions for varying cam profiles?

- fuel economy?
- emission control?
- performance gain?

kasi kung iisipin, lets say we have two engines a and b driven by the same driver in the same road with "exactly the same" specs and same car body (disp, compression, etc) except:
- engine a has "varying" cam profiles (continuous man or hindi)
- engine b has "single" cam profile

stock vs stock, which car will have the advantage in terms of:
- fuel economy and emission control?
- torque/power distribution over the "whole" rpm band?
- acceleration, speed?

will mivec have the advantage?

please take note, no engine models involved here, just plain technology of mivec, vtec, vvti, or anything else

[mazdamazda]

[size=6]YES[/size]

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[tidus1203]

Its for both performance gain and fuel economy....

[ghosthunter]

The main purpose is to have an engine that has a flexible characteristics for both performance & economy when needed/wanted by the driver.

[speedyfix]

low end tipid sa gas, high end power.