VTEC is a loose acro for Variable Valve Timing and Electronic Lift Control.

VTEC is a system which optimizes the power output and fuel consumption of a motor. Some VTEC models were built towards fuel economy , while others were for performance.

VTEC is engaged at all times. It enhances the engines low torque torque by enabling a cam for low rpm torque duty. Then crosses over to a high rpm cam profile which takes advantage of the high rpm and optimizes the power there. This in turn creates two motors in one , Honda has used this engineering along with lower powered 4cyl motors to create fuel efficient motors that produce power levels of V6 motors , with a more peppier , rev happy and refined feel.

It takes about .1-.01 seconds for VTEC to engage to the higher rpm cam mode. A big misconception with VTEC is that it kicks in at only one point. This is wrong , it is on all the time. Its setup to give a little surge when going into it for a number of reasons, this is why most tend to believe it only comes on at higher rpm or have VTEC off and on. It is always active at low and high rpm. The main reason it is so effective.

To take into consideration a 5.0 8cyl 93 mustang vs a 2.2l 4cyl prelude will beat the mustang at low and high speeds. This is due to the optimized system and low vehicle weight. This is the basis for all of honda's vehicles. Which provides a cleaner environment and has lower costs to operate. More info can be found on VTEC systems @ superhonda.com
VTEC provides an optimized cam profile for the desired rpm.
by dezoris December 01, 2006
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the thing that always kicks in, yo!
vtec just kicked in, yo!
by zack19 July 12, 2008
VTEC=Variable timing and lift electronic control.
By changing the variable timing and lift these engines can perform better than it's normal non-VTEC cousins. More horsepower, torque, revolutions per minute and so on.
by Anonymous July 19, 2003
VTEC - Variable Valve timing and Lift Electronic Control and is an electronic and mechanical system in some Honda engines that allows the engine to have multiple camshafts. VTEC engines have an extra intake cam with its own rocker, which follows this cam. The profile on this cam keeps the intake valve open longer than the other cam profile. At low engine speeds, this rocker is not connected to any valves. At high engine speeds, a piston locks the extra rocker to the two rockers that control the two intake valves.
Honda has VTEC to increase efficiency not increase performance.
by Hondapwnsford July 25, 2005
variable valve timing and lift control. several other car companies use the same thing but with different acronims:
Honda: vtec
Nissan: VVL
Ford: VTC.

even though they are essentialy the same, each one dose have it's flaws for example:

vtec has very little torque.
VVL parts are rare and hard to come by.
VTC only works on the intake cam.
Honda guy: yeah i got more power cause i gots vtec.
nissan guy: *coughs* no torque *coughs*
ford guy: you know he's right
Honda and Nissan guy: shut up, you car doesn't even run.
by thunder storm August 26, 2008
A term for Honda's valve timing system on most of their cars. Unfortunatly, it does not kick in until higher RPMs, thereby essetially doing nothing for acceleration. It's a poor excuse for losers in drag races.
I forgot to turn on my VTEC. *switches on foglights*
by Silverfox March 23, 2004
A "performance enhancing technology" employed by Honda in its "high-performance" "engines."
My Civic makes 130hp and 12 ft/lb of torque, yo.

VTEC keeps the hamsters from getting too tired.

Wait, you mean a bottle of Mountain Dew displaces more than my engine?
by Lord of the Porings September 19, 2004
Honda's name for their variable valve timing system that happens to include electronic lift control. (See also : MIVEC, VVTL-i, VariCam Plus, VANOS, and VVL. )

For combustion engines, it allows the increase of air and fuel consumption when VTEC is engaged.

Due to its "lift control", VTEC doesn't engage until higher RPMs to save fuel. Once engaged however, fuel economy drops significantly as performance increases by 20 - 30 horsepower with an increase of torque efficiency.

To market their "economy" cars, Honda used VTEC to have higher horse-power claims. Most of their horsepower claims are at high RPM marks (7,500 or higher), whereas other motor companies make their claims at lower RPM marks (5,500 or below).

This confused most buyers as they thought that engaging their VTEC would allow for them to enjoy peak fuel economy AND peak performance at the same time (hence grew the term to mock VTEC-users; "vtak just kicked in yo!")

To add to the illusion of performance (but keep the status of "economy car"), most VTEC-motors were dropped into chassis with a front-wheel drive drive train (with the S2000 and NSX exempt).

Due to their front-wheeled drive pull, some VTEC users became euphoric in what seemed to be a "fast" car(though it was mostly because of the "pull" force from the car being a FWD vehicle).

Ultimately, the concept of variable valve timing and lift control is now used by other car companies.
Person A : "I got a VTEC motor." *Grin*
Person B : "I bet that guy is a ricer."

"My RSX goes 0-60 in 7.8 seconds. It's got a VTEC."

Person B : "Dude, why do you have that gay looking spoiler on your Civic?" :/
Person A : "Are you stupid or something! Dude, it's got a VTEC. There has to be something to hold down its rear-end or I could spin the fuck out!"

by vtakk!! April 29, 2009
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