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Hey everybody, I want to know a little bit more about the engine of the 02 si. I am making the assumption that it is DOHC but what is the difference between its i-vtec (intelligent-vtec??) and the regular (stupid [IMG]i/expressions/laugh2.gif[/IMG] )vtec in our ex's?? any elaboration or links from you guys would mean just one thing: it's miller time [IMG]i/expressions/beer_yum.gif[/IMG] [IMG]i/expressions/beer_yum.gif[/IMG] [IMG]i/expressions/beer_yum.gif[/IMG]
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i-Vtec is rumored to be slower because it is considered more "fuel effecent."

 
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more slow, what do you mean by that....160hp, and 200hp is slower than our fastest 127 hp...
dont quite understand

 
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I mean compared to regular V-Tec (if they had both aval.) the regular V-Tec would beat it. I am not saying that our regular V-Tec will in anyway beat any of the i-Vtec's but if you had a choice the regular would be faster.

 
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ugh oh ok...?? still not clear but i kinda see what you mean
dont know if thats true
cause i hear the i-vtec is VERY responsive, especially to aftermarket parts

 
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Why would they use I-VTEC in cars that are tuned for performance such as the Si and the RSX Type S. I don't think it's slower or tuned for fuel economy. Our VTEC is tuned for fuel economy and performance.

 
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i vtec maybe more fuel efficient but it is definetlly better it not only has the vtec effect but it also retards the engine and then advances it during the vtec timeing ( meaning more torque and throttle response) so i would have to pick i-vtec because of the extra response it has. plus it has been proven to make more hp after being moded and higher gains than reg vtec

 
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well the k20 is the new toy for honda they have been workin on it for a while before they relaesed it...the b- series enigne was a great thing...but it got too played out and no more potential that is why they ame out with the K20...

 
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i-vtec is different because it gives continuous power throughout the rpm band, example: out cars redline at 6800 and our peak power comes about 6000 or so....i vtec bacially would give us our peak power all the way up to the redline not just 6grand

 
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as the rpms go up, the intake cam timing is adjusted automatically depending on load, viechle speed, rpm, ect. Like the VVTI on the Celica GTS.

 
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dun forget the matrix, and IS300....