VTEC question???

12275 Views 14 Replies 8 Participants Last post by TrueEuroR, Jul 16, 2012

EKJDM

Discussion Starter · Jul 11, 2012

I own a 04 TSX 6speed. I engaged in lift 6k the other day and I debt feel yet or hear my car vtec engage at all. Is there a problem? My buddy said the k24 didn't cone with vtec which I think is completely false. Anyone know what my problem is? It's Nike stock with a drop on fliter changed oil every 3k.

1 - 15 of 15 Posts

tottenham12712

· #2 · Jul 11, 2012 (Edited)

Im not sure if I completely understood what your trying to say but k24s have Vtec, I think one does not(k24a5 ?) but our a2 does and it is iVtec. There are numerous conditions that are required for vtec to engage 1) enough oil presure 2) 6200rpm (stock) 3) a minimum manifold pressure, 4) throttle position 5) Coolant temp up to operating temperature.

All of these things need to be met before vtec will engage.

If im reading this right did you say you tried to engage vtec on a lift? First of all if you had the car in gear on a lift at 6k thats just insane and stupid. Secondly there is something called CLV or calculated load value. That has a value that needs to be reached as well in order to hit vtec.

http://www.hondata.com/techk20general.html

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

See less See more

Reactions: 1

EKJDM

Discussion Starter · #3 · Jul 11, 2012

Lol! No my car. Not on a lift. I was on my way home from work and decided to see what vtec felt like, never felt it before. So warmed her up got on the free way and opened her up to 7k I heard vtec engaged at 6k. My problem Is was my car warmed up enough and is there a problem my I didn't hear, or felt it engage. There is no cel so I was just curious.

tottenham12712

· #4 · Jul 12, 2012

EKJDM said:
Lol! No my car. Not on a lift. I was on my way home from work and decided to see what vtec felt like, never felt it before. So warmed her up got on the free way and opened her up to 7k I heard vtec engaged at 6k. My problem Is was my car warmed up enough and is there a problem my I didn't hear, or felt it engage. There is no cel so I was just curious.

Is your car stock? If its bone stock vtec isnt very noticeable. If you install an intake and or do the SRI mod with the stock piping you will know if its engaging or not.

On a stock TSX you should feel a lose of power around 5400 -6000 and than the car should start to pull again as vtec engages. Its not very noticeable on a stock TSX

whatsanacura

· #5 · Jul 12, 2012

+1^

It's subtle, but you will notice it if you try. The K24 isn't quite a high RPM screamer as say a Civic Si FA5 or S2000.

EKJDM

Discussion Starter · #6 · Jul 12, 2012

Thanks, i was just wondering if my car had a problem and i didn't know it. I'll try a DIY SRI and see if i can hear it.

tottenham12712

· #7 · Jul 12, 2012

EKJDM said:
Thanks, i was just wondering if my car had a problem and i didn't know it. I'll try a DIY SRI and see if i can hear it.

Most likely not but it is possible its not engaging. But it would generally throw a code.

K_A_N_O

· #8 · Jul 12, 2012

VTEC and i-VTEC sound completely different when they engage.

thats if you have ever heard, felt a VTEC engage. with an air filter you get a distinct noise change, and if its a DOHC then yea you get a nice kick.

i-VTEC is hardly noticeable when it engages on the TSX even with an air filter on, the change in noise pitch hardly changes.

sincerecda

· #9 · Jul 12, 2012

Hey fellas I'm new to the tsx world I been in gsr's & type r's since I started driving and my question is do all tsx's have vtec or is there some tht don't come with it? Like having an LS integra vs a gsr integra ???

Sent from my T-Mobile G2 using AutoGuide.Com Free App

jvillefinest

· #10 · Jul 12, 2012

All four cylinder tsx have vtec

Sent from my PC36100 using AutoGuide.Com Free App

TrueEuroR

· #11 · Jul 15, 2012

All i know is.... having CAI, Full Catback exhaust, Headers, you WILL without a dout hear the vtec kick in. Because with my mods, it pulls and screams LOUD when vtec kicks in. and yes, without a reflash, stock ECU, Vtec does kick in around 6000 rpm.

Grounded

· #12 · Jul 15, 2012

iVTEC K24A2 is very disinct for me and all I have is a SRI.
If your not hearing any change in tone with an intake there is a problem.

tottenham12712

· #13 · Jul 16, 2012

Grounded said:
iVTEC K24A2 is very disinct for me and all I have is a SRI.
If your not hearing any change in tone with an intake there is a problem.

Thats not true at all, with a completely stock k24 you wont really hear or feel it with the airbox setup and resonator. You have an SRI so thats why you hear and feel it, it makes a huge difference.

Grounded

· #14 · Jul 16, 2012

tottenham12712 said:
Thats not true at all, with a completely stock k24 you wont really hear or feel it with the airbox setup and resonator. You have an SRI so thats why you hear and feel it, it makes a huge difference.

My post states with a SRI.

TrueEuroR

· #15 · Jul 16, 2012

tott, i beg to differ. when I had mine, i DID and Feel my vtec kick in bone stock. but hey, everyones car is different.

1 - 15 of 15 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.