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At what stock RPM does the VTEC kick in? I've never felt anything while accelerating....I was always under the impression that you cant "feel" the VTEC but everyone here says you can? (came to the civic from a jeep...I dont really know anything about import engines....or anything computerish with the engine)

Sorry....I know the above is a newbie/idiot question....searched the forum, didnt find anything.

-Mystic

P.S. I saw another 5.0 today....these things are plaguing me...didn't race this one though.

 
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Stage 1: 0-2500RPM
Stage 2: 2500-4500RPM
Stage 3: 4500-6800RPM

Fuel Cut Off: 7100RPM

Correct me if I'm wrong guys.

 
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Alright....just went around the block....I still feel nothing....2k2 EX Coupe 5 Spd.......am I just not feeling my car or something? Or is everyone else just overexadgerating the "power" of the VTEC kicking in?

 
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our VTEC kicks in around 5500 i guess..... u wont really feel it that much cause we have an SOHC engine DOHC kicks in bad a**

 
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The Honda Civic has the worse example of VTEC. And the VTEC kicks in at 4,000 RPMs. Get an intake... you can kinda hear it, but you will never FEEL it. Get a DOHC engine at least.

 
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5,500 RPMS?!?!?! BWAAAHAHAHAHA! Not even a GS-R or the Si engines kick in THAT high. With 1,300 RPMs left to the redline at 5,500 RPMs, what's the point of VTEC? 5,500 RPMs? Only in an Integra Type R.

 
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nope ... OPGForce is pretty accurate. I have an extremely loud exhaust and I tested it myself ... just listen to the sounds ... it's easier if you have a loud exhaust to hear (feeling is different) the difference.

This is what I've noticed for 7th gens only...

S1 - 0-2500
S2 - 2500-4250 (4200-4300)
s3 - 4300-7100

yeah ... 7100 is pretty much cut off ... I've noticed that too.

Something I haven't yet found out is the Civic's top speed though ... I've gone 120mph on the freeway without a limiter hitting ... yet I don't know where it's supposed to hit. The manual says that for automatics (or cvt?), the speed limiter is at 112. It doesn't say anything about stick though ... so I'm not sure what it is.

No, 5500 for vtec is definitely wrong. It hits at 5500 for 6th gens, but 7th gens are different. However, I definitely agree ... sohc vtec sucks. It's almost like not even having vtec.

 
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Speed limiter?? I didnt think there was a speed limiter. Anywayz, the fastest i've gotten my EX stick on totally flat and straight road is 125. After that, it seems it just doesnt want to pull anymore, but if you went downhill i'm pretty sure you could go past this.

BTW, since we do have a 3 stage vtech, you cant feel it as much as if it all kicked in at once. Yes the sohc does take away from the feel of the vtech kicking in, but since vtech in our civics come in at 3 stages you wont feel it kick in. If it just kicked in all at once, say at 4000 rpm, i'm pretty sure the kick would be a lot stronger.

 
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i just heard that from someone. neway thanks for the info... now i can correct him...

 
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Last I recall the EX's only have a single stage Vtec...the HX's have the 3 stage System..

 
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I'm pretty sure the EX has the 3 stage vtech as well, but dont hold me to that becuase I could be wrong.

 
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Teh newbies are up tonight I see.

The EX tops out at 127MPH. The other models are 115MPH. EX has no speed limiter. Redline is at 6,800 RPMs, rev limiter is 200 RPMs beyond that. The engine "gets louder" at 4,000 RPMs. VTEC in such a car with such a low redline (for a 4-cylinder Honda engine) is not gonna be passed 4,500 RPMs. It's used to save gas and gives a HP boost to the engine you can't feel.

DOHC VTEC engagement

GS-R, 4,500 RPMs, redlines at 8,000 RPMs
Type R (DC2), 5,500 RPMs, redlines at 8,400 RPMs
Type S, 5,500 RPMs, redlines at 7,900 RPMs
Type R (DC5), 6,000 RPMs, redlines at 8,400 RPMs
S2000, 6,000 RPMs, redlines at 9,000 RPMs
NSX, ?, - redlines at 8,000 RPMs (but limits at 8,600)

And yes, i know I left out the Si because I don't know. The 99-00 Si could be the same as the GS-R. Not sure about the new Si.


I am boooooooooooored.

 
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You are. [IMG]i/expressions/face-icon-small-smile.gif[/IMG] They are SOHC VTEC engines. Single stage, yes. Another plot to make the EX Civic as Honda's "performance model" from the DX, HX, LX and EX. 127HP, oooooooh.

 
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The EX has regular SOHC VTEC while the HX has the Lean Burn VTEC-E. 3 stages VTEC engines have 2 VTEC silenoids(sp?). One for the VTEC-E stage and one for the regular VTEC. I'm pretty sure that VTEC "kicks" in at about 4500. Thats when I feel a slight increase in acceleration. That might also be my header.

 
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I beg to differ, my 2k2 EX coupe is 100% Stock, and it tops out at 135mph, maybe im doing something wrong?

 
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On the Vtec part, i just got a V-AFC put in and i set it for 4900 and as my car goes from 1000 to 4900 it pulls regular, but when i hit 4900, there is a whole diffrent tune to it, and it pulls nasty. i know it just isn't in my head... i have a auto EX and the top speed i hit was 120, and backed off because i was on my steelies...

the new si redlines at 6500 because of the more torque they make, they don't need a higher redline to get 160 horses... Remember that the magic number 5252 works only with torque in ft-lbs units. this is the cross over point that on every single dyno sheet you will see the torque go down and horse power will go up and intersect.

Torque * RPM
Horsepower = ------------
5252

Linky

 
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In any case, it's very hard to feel the VTEC engagement in our SOHC cars. Although you might "feel" something different if you have an intake and exhaust, it's mostly in your head. There are some people in here who 'claim' that when they put their stock intake back in, they feel 'faster'. But nah, everything's pretty much in our heads...[IMG]i/expressions/face-icon-small-frown.gif[/IMG]

 
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as far as I know, you can't feel VTEC on our car no matter what you do to them, but you can sorta hear it and notice the SLIGHT speed increase...

you can try this, start from 2nd gear not fast, just regularly and when you get around 4k you can feel the car giving more power...

 
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sometimes i can feel the VTEC kick in, but only when my AC is blastin. [IMG]i/expressions/laugh2.gif[/IMG]

I think i read somewhere on here that it's just taking power away from the AC and putting it towards accelerating ....or something like that ... ??? [IMG]i/expressions/face-icon-small-confused.gif[/IMG]

Also, on my sticker it DEFINITELY says VTEC-E on it... if you don't know what that is go HERE You can learn all about the science of VTEC and its many forms there.

 
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ive also gone above 127 in my car. It was at like 3 am on my trek from cali to texas...my needle read 134mph, and i have 17" wheel, so there is about a 4% difference that need to be added on to that.

 
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Do you guys want to really feel your VTEC? Get a V-AFC, trust me...you'll FEEL your VTEC come on. TRUST me, it's not in your head...you feel it...very hard.

 
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Are you jsut using that for fuel regulation or do you ACTUALLY have the Vtec system wired? I dont ever recall anyone saying there was a successful install of the vtec part of the v-afc?

 
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Apexi got their **** together and made a wiring diagram, its on their site somewhere

 
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V-AFC? I think I'll save the money for a swap.

 
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They "top-out" at there exact HP measurements. Cool I didn't know that.

 
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Thanks for correcting me on the 3 stage vtech. Like I said, I could be wrong and it turns out I was.

 
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thank you Hwoody77 for backing me up... the V-AFC works great, and that biatch kicks in hard

 
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I think it can go faster than 127. I've been up to 125 and still had a lot more room to go till the rev limiter in 5th. Oh well I went 121 today but then I reached the bottom of the hill and had to go back up and it wouldn't go any faster.

 
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I'm not even gonna try to explain that one but if you search how fast people have driven their Civic, you'll see for yourself that those #s are the average #s stock. It's been posted wayyyyy too many times. I will claim the 127 one as I took mine up to 127 MPH with an exhaust and it didn't wanna pull any more.

And yes, if you have a bigger rim with a low profile tire, your speedometer is off. You're not going as fast as your speedometer claims.

Oh, and the new Si redlines at 6,800 RPMs, not 6,500 RPMs. It's the same as every other Civic. The only Honda (car) I know of that redlines around that # is the Accord.

 
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im sorry, i was off by 300 rpm