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IceBolt

Senior Member
Hey my dad says that the 97 prelude revs really freely but the civic SiR doesn't rev as freely. Is there a reason for this? The prelude has vtec after a certain rpm, but the SiR has ivtec which has vtec all the way.. is this why?
 
first the SiR doesn't have vtec all the way, the vtec kicks in at around 4600 rpm
i-vtec means that the engine self retards or advances when at idle to give u a smooth idle and better emmissions on start up.
i don't really under stand by what you mean be reving freely?
is the car not smooth when reving?
or does it not rev as fast?
 
Originally posted by B16@Mar 11 2003, 04:29 PM
ivtec is in 01+ cars

Except civics and s2k's. Civic's are still using a d17 vtec motor. S2k is a 3 stage vtec, not i-vtec. Only the k-series are i-vtec and new Accords (what block are these?)
 
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