[thelinux]

Mine is 2006 V6 LX.
I know it's a VTECH engine. But I am not so sure what it is.
I guess it gives you more torque when you do quick acceleration???

How do I test to see if my VTECH works properly????

 

[mikeybrasileno]

Vtec

 

[fastball]

VTECH is the phone manufacturer...... :thumbsdow

VTEC is the acronym for the technology that is in our Honda engines

It stands for Variable Timing and Electronic valve Control

Yes, it does help with performance.

Want to check if it works? Step on the gas :biggrin:

Seriously, there's no way to test if it works. It's a whole complicated process that's all a part of the engineering of the motor. If it doesn't work you'd have a check engine light and lots of issues going on.

So, if your car starts, runs, and feels good, VTEC is working :thmsup:

 

[thelinux]

VTECH is the phone manufacturer...... :thumbsdow

VTEC is the acronym for the technology that is in our Honda engines

It stands for Variable Timing and Electronic valve Control

Yes, it does help with performance.

Want to check if it works? Step on the gas :biggrin:

Seriously, there's no way to test if it works. It's a whole complicated process that's all a part of the engineering of the motor. If it doesn't work you'd have a check engine light and lots of issues going on.

So, if your car starts, runs, and feels good, VTEC is working :thmsup:

Sorry about that phone manufacturer.

I heard that if you step on gas suddenly then VTEC kicks in, you could feel the difference.
But I don't know what kind of difference I am expected to feel.
Is there really no way to feel it in action???

 

[ry05coupe]

When you hit the gas and end up in warp speed, that's when you know vtec is working,





or something like that

 

[MikeCz]

Mine is 2006 V6 LX.
I know it's a VTECH engine. But I am not so sure what it is.
I guess it gives you more torque when you do quick acceleration???

How do I test to see if my VTECH works properly????

There are diagnostic tests that can be performed on the Vtec components, however if you keep pressing the accelerator in say 2nd or 3rd to stop the auto from changing up below 3000 RPM as the RMPs increase you will feel a sudden increase in acceleration and hear a change in induction noise as the valve lift changes with Vtec (or you could just lock it a gear).

Normal conserve fuel, keeping up with the traffic flow driving usually won’t engage Vtec. Just flooring it from a higher gear will usually bring the revs up so fast on the change down that you will miss the engagement point.

 

[thelinux]

There are diagnostic tests that can be performed on the Vtec components, however if you keep pressing the accelerator in say 2nd or 3rd to stop the auto from changing up below 3000 RPM as the RMPs increase you will feel a sudden increase in acceleration and hear a change in induction noise as the valve lift changes with Vtec (or you could just lock it a gear).

Normal conserve fuel, keeping up with the traffic flow driving usually won’t engage Vtec. Just flooring it from a higher gear will usually bring the revs up so fast on the change down that you will miss the engagement point.

Got it. so I set my transmission at 2nd or 3rd then hit the gas hard until RPM goes up very high then VTEC kicks in, right? But how do you catch induction noise from engine noise or road noise? That could be impossible?

So if it's not used at all in normal driving, why did honda put this on the engine when accord is a daily driver? Looks like this is something which never be used by an average person?

 

[andrewvroom]

It hits hard at 4500 rpm , the engine note changes and the acceleration is harder all of a sudden. In my brothers Acura CL type-S, it's very obvious at exactly 5000 rpm when you put the gas to the floor. It seems louder in his car because his engine seems louder, so are his exhaust compared to my 6 speed.

You should here the VTEC in a DOHC Honda prelude or civic si. You really know what VTEC sounds like and what it does when driving one of those cars.

 

[Accordian169]

It hits hard at 4500 rpm , the engine note changes and the acceleration is harder all of a sudden. In my brothers Acura CL type-S, it's very obvious at exactly 5000 rpm when you put the gas to the floor. It seems louder in his car because his engine seems louder, so are his exhaust compared to my 6 speed.

You should here the VTEC in a DOHC Honda prelude or civic si. You really know what VTEC sounds like and what it does when driving one of those cars.

Yeah, I was really confused when I first got my Accord because in my CL-S the VTEC switch over was so noticable at 5000 rpm, but not in my Accord. Once I put my V2 on though I noticed it a lot easier when it switches over at 4500 rpm.

 

[MikeCz]

So if it's not used at all in normal driving, why did honda put this on the engine when accord is a daily driver? Looks like this is something which never be used by an average person?

Simple non technical answer, drivability, fuel consumption, or think Dr Jekyll and Mr Hyde.

Depends on your daily drive, sometimes you do sometimes you don’t. Its there when you want to use it.

Hell I’m sure that some guys on here only come out of Vtec when the lights turn red :biggrin: :biggrin:

Got it. But how do you catch induction noise from engine noise or road noise? That could be impossible?

Then you must have a noisy car, roads, exhaust or other compared to mine, it is instantly noticeable to me both in sound (exhaust and induction) with a big increase acceleration.

 

[Aceman196]

Try Putting it in 2nd 3rd then accelerate slowly. When I do it in First the tires Chirp.

 

[Antarctica]

Mine is 2006 V6 LX.
I know it's a VTECH engine. But I am not so sure what it is.
I guess it gives you more torque when you do quick acceleration???

How do I test to see if my VTECH works properly????

Since you don't know what VTEC is exactly, check out the following video: http://www.youtube.com/watch?v=fDCoHT-ja_Q

Next, read the following article, "What does the VTEC system in a Honda engine do?"

http://auto.howstuffworks.com/question229.htm

If that still doesn't explain it, then read http://www.hondahookup.com/info/vtec.php.

VTEC is the acronym for the technology that is in our Honda engines

It stands for Variable Timing and Electronic valve Control

You were almost right. VTEC stands for Variable Valve Timing and Lift Electronic Control. :thmsup:

Sorry about that phone manufacturer.

I heard that if you step on gas suddenly then VTEC kicks in, you could feel the difference.
But I don't know what kind of difference I am expected to feel.
Is there really no way to feel it in action???

On the J30A4, VTEC engages at 4,900 RPM. On some engines you'll feel VTEC engage and others you won't. Most DOHC VTEC I4 engines, such as the B18 or H22 for example, have a very noticeable difference when VTEC engages.

Got it. so I set my transmission at 2nd or 3rd then hit the gas hard until RPM goes up very high then VTEC kicks in, right? But how do you catch induction noise from engine noise or road noise? That could be impossible?

As the engine sucks in the air, the sound that resonates from the engine travels through the intake. Most intakes have a resonator that suppresses a lot of engine noise. By adding an aftermarket intake, such as the AEM V2, the resonator is depleted and the sound that resonates from the engine travels through a denser intake material, aluminum (I think) instead of plastic. Therefore, you can hear the change in engine noise easier when VTEC engages.

So if it's not used at all in normal driving, why did honda put this on the engine when accord is a daily driver? Looks like this is something which never be used by an average person?

Honestly, I see the Accord V6 as a entry level luxury car, at least the EX trim (don't believe me, check out the Thai Accord). A luxury car deserves power, even if you don't use its full potential. I believe the reason why they put VTEC on the J series (the Accord V6 engine) is because it would be a lot easier to just design one engine with a few minor modifications across the different models it would be used in. Why waste money on building a different engine for a single model even if it is a daily driver? The same engine series you drive is also put in the 6 speed Accord, the Acura TL, Acura RL, Honda Ridgeline, and a few other vehicles.

Anyway, if you want to know when VTEC engages, go hit the highway and get in your highest gear possible. Downshift and rev up to about 4,500 RPM. Accelerate moderately and when you reach 4,900 RPM, notice the difference in sound and acceleration. Your car should feel like it had an increase in power. I hope all this helps. Really, it helps knowing how VTEC works as well as the engine and camshaft. Once you know how it works, you'll know what to look for. Also, if you can, go find someone with a modded Integra or a B18 Civic and ride around in it. VTEC in those cars feels a lot different than it would in our V6 Accords. :thmsup:

 

[TonyWare]

The computer decides if it engages it or not. There are all kinds of conditions that folks out there have observed. Among them, over 3/4 full tank (even tho I think this is just a myth). Also, for sure, the engine has to be fully warmed up, around 83oC (if v6). Oil pressure plays a role of course but nobody really knows for sure the level of tolerance for any of these conditions.

However, don't over do it trying to engage the VTEC ! The transmissions, especially on the v6, are very very delicate.

 

[fastball]

! The transmissions, especially on the v6, are very very delicate.

Unless you have a stick :thumbsup:

 

[Aarmin]

...So if it's not used at all in normal driving, why did honda put this on the engine when accord is a daily driver? Looks like this is something which never be used by an average person?

There are actually different forms of VTEC, and VTEC is Hondas variabl valve timing technology; other manufactures have their own versions. In fact, valve timing is (or will be) the norm just like overhead cams.. Kias even have theme now

My '05 Accord has i-VTEC; without it my torque would suck aranoid:. Your V6 has a 3-stage VTEC.

Your 3-stage VTEC offers a hybrid between VTEC and VTEC-E (yes, yet another form of VTEC); at low speeds only one intake valve is used, at medium speeds, two are used, and at high speeds the engine switches to a noticable warp-speed... you may have noticed this internet joke?

Basically, both low-speed fuel efficiency and high-speed efficiency and power are improved.

 

[vasekvi]

There are actually different forms of VTEC, and VTEC is Hondas variabl valve timing technology; other manufactures have their own versions. In fact, valve timing is (or will be) the norm just like overhead cams.. Kias even have theme now

My '05 Accord has i-VTEC; without it my torque would suck aranoid:. Your V6 has a 3-stage VTEC.

Your 3-stage VTEC offers a hybrid between VTEC and VTEC-E (yes, yet another form of VTEC); at low speeds only one intake valve is used, at medium speeds, two are used, and at high speeds the engine switches to a noticable warp-speed... you may have noticed this internet joke?

Basically, both low-speed fuel efficiency and high-speed efficiency and power are improved.

I am pretty sure the 2003-2005 V6 Accord VTEC only has a 2 stage. I do not know about how many valves are open or closed, but I know that the VTEC cams more aggressive lobes kick in to alter the valve opening duration, timing, and lift. So it is pretty much either on or off. There is no in between, hence the lack of the "i" as in iVTEC models, which no longer has a noticeable VTEC switchover point of the non iVTEC VTEC models.

 

[A&Fbro28]

My Prelude hit vtec at 5250rpm (98 Type SH), Loved the surge. Now that its cooler, my K24 in my accord pulls hard. There is a slight Resonance surge at 3000rpm but vtec x-over happens at 5000rpm. Since the "i" part of vtec lets the ecu adjust when vtec engages, i wonder if you guys with intakes on k24 notice that vtec x-over occurs at a different rpm?

 

[Antarctica]

I am pretty sure the 2003-2005 V6 Accord VTEC only has a 2 stage. I do not know about how many valves are open or closed, but I know that the VTEC cams more aggressive lobes kick in to alter the valve opening duration, timing, and lift. So it is pretty much either on or off. There is no in between, hence the lack of the "i" as in iVTEC models, which no longer has a noticeable VTEC switchover point of the non iVTEC VTEC models.

The J30A4 has a three-way VTEC system.

The J30A4 pushed output to 240 hp (180 kW) and 212 lb·ft (287 N·m) using a three-way VTEC system, higher (10:1) compression ratio, and a novel exhaust manifold cast as one piece with the cylinder head.

 

[rafael73]

Mine is 2006 V6 LX.
I know it's a VTECH engine. But I am not so sure what it is.
I guess it gives you more torque when you do quick acceleration???

How do I test to see if my VTECH works properly????

Well, at 5500 RPM's plug a cell phone charger cable into the armrest console socket. Make sure the cable is peeled. Then hold it with your theet and with the tongue, touch the peeled part. If you feel the current, the VTECH is on...

 

[VWEATERACCORD]

http://www.youtube.com/watch?v=AcT_ZyY3F0k
watch this video maybe that will help.
Vtec= Kick ass.