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Hello guys .. I am new here , because I got my 2004 TSX recently ... So I heard that the i-VTEC pops in at around 6k rpm ..I went for a little test with my tsx and put it on VSA off and manual mode.. I rev it to the max and it seems that I heard a little bit of the VTEC but not that much as I expected.. By the way my tsx is full full stock... What do u think guys ... You think that my vtec may not work :/ ... I heard that tsx vtecs are not very noisy until u put a INTAKE cooler on ... but is it possible that a vtec doesnt work ? like I said i felt it a little bit but not that much ..

Thank you , I'm waiting for your help :)

Marius -
 

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The stock vtec engagement point (6k rpm like you mentioned) is very subtle, but it's there. Did you try hearing the engagement point with the drivers' window down and radio/fans off? You'll hear a very faint change in the pitch of the intake noise.
With a cold air intake, you'll DEFINITELY hear it more. I'd recommend getting a Hondata reflash as it lowers the vtec to 5k and makes some fuel mapping tweaks, etc... for a great price.
 

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I have the CT icebox, Tanabe Touring Medalion exhaust and the reflash, I still cant hear vtec. I know the reflash smooths it out a lot, and it revs to 7800 now (2005 6 spd manual). The truth is with TSX's is that you just don't get that VTEC "POP", but its there.
 

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I have the CT icebox, Tanabe Touring Medalion exhaust and the reflash, I still cant hear vtec. I know the reflash smooths it out a lot, and it revs to 7800 now (2005 6 spd manual). The truth is with TSX's is that you just don't get that VTEC "POP", but its there.

I also have the CT Icebox and Reflash (stock exhaust) and I can tell you the Icebox adds a little sound but VTEC is still pretty subtle. If you really want to hear it you may want to go with a cold air (typical tube style) or a short ram which will in my opinion not be the best for power.


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The k-series i-VTEC motors have variable intake cam timing as well as VTEC.

A smooth VTEC transition is a sign of a good calibration.
 

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Lol this isn't fast and furious.... Just kidding, but our cars are engineered to be luxury vehicles, not sporty civic si with dohc VTEC written on the side of it lol. The VTEC is there. If it's not operating then it'll throw a check engine light.

If you really want to hear it then put an intake on it. I've got the injen with the filter inside the fender and the VTEC is subtle but still audible.
 

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If you came from a b series vtec like me prior to the TSX it is definitely night and day when you compare vtec sounds. I miss the old jolt and sound of baaaaaaaaaaAAAAA sometimes, but as other have previously mentioned the TSX K24 is a more subtle quieter machine.
 

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Lol this isn't fast and furious.... Just kidding, but our cars are engineered to be luxury vehicles, not sporty civic si with dohc VTEC written on the side of it lol. The VTEC is there. If it's not operating then it'll throw a check engine light.

If you really want to hear it then put an intake on it. I've got the injen with the filter inside the fender and the VTEC is subtle but still audible.
Thats not entirely true. If there is something wrong with the vtc or vtec actuators or pressure switches than yes it will throw a code.

If the engine is low on oil and/or there is not enough oil pressure, vtec will not engage and there will be no light. Vtec requires a handful of things in order to engage (coolant temp, oil pressure, TPS, etc.) if any of the required sensors dont meet the minimum requirement it will not engage, and no code will be thrown.
 

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I don't care if I hear vtec, I rev to 7800 which is a gorgeous sound in itself. :)
 
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