VTEC engagment
#1
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VTEC engagment
Perhaps someone with much more technical knowledge of the MY04's can correct me, but when I climb the RPM band I swear I feel the VTEC 'kick' at 6500 rpms, not the 6000 rpm's that everyone says VTEC starts at. Is this possible, or am I just imagining things?
Second question: is downshifting into VTEC bad for the engine? For example if I am on the highway and in 5th at around 5000 rpms, if I downshift into 4th, which would throw the engine in VTEC, am I harming the engine? Just wondered before I try anything.
Thanks in advance.
Second question: is downshifting into VTEC bad for the engine? For example if I am on the highway and in 5th at around 5000 rpms, if I downshift into 4th, which would throw the engine in VTEC, am I harming the engine? Just wondered before I try anything.
Thanks in advance.
#2
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where do you live? altitude can affect the VTEC hi cam engagement point.
and no downshifting (as long as you stay below redline) really won't hurt anything.
and no downshifting (as long as you stay below redline) really won't hurt anything.
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You know, at first I didn't notice exactly where it kicked in either. So if he's new to the car, it may just be that. Adding CAI will make it much easier to detect!
#7
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Originally Posted by Wisconsin S2k,Jul 8 2005, 03:43 PM
where do you live? altitude can affect the VTEC hi cam engagement point.
My car consistently crosses into VTEC mode at 6k rpm down home. During the few passing maneuvers I made in the mountains of Colorado, the car didn't transition into VTEC until 6.4, maybe 6.5k rpms. The altitude is the only thing I can think of that's making the difference. Why it would be programmed that way, I don't know. The first couple of times it was a bit unnerving. Six thousand rpm would come and go and no VTEC.
Now that I'm back near sea level again, it seems to be back to normal.
FWIW!
Drive Safe,
Steve R.
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#9
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I am located in SE Michigan, so no altitude at all. I just can't figure out why it seems to kick at 6500 rpm's, not the 6000 that it should. Maybe at my first oil change I will have the dealer look at it. Thanks, for everyones help.