What does E-TECH mean?

[SinDromX]

Hi everyone, I've a question, since I bought my Woo, I don't understand E-Tec.
I know V-Tec is from Honda, and means that more valves opens when you're high in RPM. Ze-Tec is from Ford, and I don't know what it is for.

And E-Tec ?

[KnightWalace]

Emissions... i believe.

[PrecisionBoost]

E-TEC really means nothing.... it's just a catch phrase to make people more interested.

Most people think it means variable timing so that gives the car a better image.

The 1.6L DOHC Lanos uses a dual lenght intake tract.... which is what most people think the E-TEC and D-TEC stands for but the 1.6L is the only Daewoo engine to use this technology (to my knowledge)

Basicly during low RPM the air goes around in the longest part of the intake and at high RPM a valve opens to make a very short path.

It increases power in the lower RPM and makes the powerband a little more even.

A long intake tube (after the throttle body) will make better power in low RPM but at high RPM the long intake restricts the air flow

Many expensive cars use variable intake geometery but the Lanos is the first inexpensive car to do so.

Some cars will have as many as 4 different intake pipes of different lengths and they will switch from one to another as you increase through the RPM range.

[daewooluvr]

Etec is the computer mode used to conserve on gas and lower emissions. When you mash the pedal and you feel a kick in power, that occurs when Etec disengages.

[SinDromX]

OK. Thanx.

But, tell me, do you know why I have a kick in power, has you said, at 3.000 RPM ? and the same at 5.000 ?

Does it has something to do with the disengagement of the E-Tec mode ?

[Wolf-Spirit]

4500 the intake changes length you could feel that...
3k? hmmm still using stock wires maybe? if so get others

[SinDromX]

If course, everything is still stock on my car.
But not for long... (I hope)

[Wolf-Spirit]

well since i replaced my stock cables for copper core ones i have alot more power in lower RPM's and under heavy load (alot of people in car and so on)
and i used to have a powergain shock thing around 3k before i replaced em but actualy it yust means it looses power on low RPM's

[Luis P.]

i am planing to put a turbo(6 psi) on mi 1.6 DOHC Woo with stock pistons...do i have to worry about the e-tec??

[MMamdouh]

e tech is just a name... that has nothing to do with turbo

VGIS is an intake mechanism... with forced induction it won't matter as you are running no vacuum, i'd recommend building a new intake for the forced induction setup

MMamdouh

[Rodd1s]

out of dtec, etec, vtec and zetec... vtec is the only one that is an actual mechanical functionality. the others are just names.

[MMamdouh]

also VVT and CVT are mechanical names

VVT: variable valve timing
CVT: continuous variable transmission.

MMamdouh

[Rodd1s]

also VVT and CVT are mechanical names

VVT: variable valve timing
CVT: continuous variable transmission.

MMamdouh

true, but i was mainly referring to the names with "tec". cos people think its similar to honda's vtec.

VVT is similar to VTEC, but not as good, altho it still allows some engines to rev to 8/9000 rpm like honda.

[MMamdouh]

also VVT and CVT are mechanical names

VVT: variable valve timing
CVT: continuous variable transmission.

MMamdouh

VVT is similar to VTEC, but not as good, altho it still allows some engines to rev to 8/9000 rpm like honda.

VVT is different... check those vids:

http://www.youtube.com/watch?v=jzWw_F47jas
http://www.youtube.com/watch?v=dSZXepU7Sks
http://www.youtube.com/watch?v=MR63IrKHv7E

MMamdouh