VTEC Engagement Variables
#1
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Join Date: Jun 2002
Location: Tempe, Az
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VTEC Engagement Variables
What are the variables that determine whether or not vtec engages? I know oil pressure is a factor but what about throttle position, etc, etc. This came to mind while driving in 4th gear ~25mph(came out of a corner, didnt have a free hand to shift so i just let it go). The thing is that your speed climbs very slowly when in such a high gear but eventually it gets up into the 7 grand range, does vtec engage or just keep on revving on the original cam profile?
Ryan
Ryan
#2
Vtec will always engage on the GSR at 4400 rpm regardless of gear. The secondary intake runners will always open at 5800 regardless of gear....which is why I really have to go fast to get them open in 5th gear.
If your oil pressure is too low the cams will not engage until a higher RPM, you will probably hear clicking and stuff as they try to engage and fail.
One suggestion, learn how to downshift or something because coming out a corner in 4th gear? Im suprised you didnt bog lol.
That or stop trying to feel up your girl while driving corners
"I didn't have a free hand!" heh
If your oil pressure is too low the cams will not engage until a higher RPM, you will probably hear clicking and stuff as they try to engage and fail.
One suggestion, learn how to downshift or something because coming out a corner in 4th gear? Im suprised you didnt bog lol.
That or stop trying to feel up your girl while driving corners
"I didn't have a free hand!" heh
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engine temp will restrict VTEC activation mine wont activate till im about 3 blocks from home in the morning then temp guage gets off its lazy C a** and the I get VTEC I have no intake runner change over though so I cant comment on that.
#10
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Originally posted by aut0tek
Hey... Least he has a girl to feel up. lol Some of us gearheads... Only time we get to feel is when valve adjustment comes around.
Harry
Hey... Least he has a girl to feel up. lol Some of us gearheads... Only time we get to feel is when valve adjustment comes around.
Harry