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vtec and i-vtec difference

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Old Sep 16, 2003 | 09:31 PM
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Default vtec and i-vtec difference

im assumeing that the difference between vtec and i-vtec is just weither its inline or not right?
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Old Sep 16, 2003 | 09:38 PM
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it's basically the same as vtec, with one exception...

at the bottom:

http://hondata.com/techk20general.html
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Old Sep 16, 2003 | 11:24 PM
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The engine can advance or retard the intake cam up to 50 degrees as needed for power or emission...

Also, don't i-VTEC systems also have a lot of control over the ignition timing of the vehicle... like up to some redicilous number like 50 degrees as well?

Hrm... so it looks like Hondata has made ROM flashes for the RSX-S, but hasn't made a standalone ECU management system... The K20A2 will really shine when independent tuning shops can do per-application tunes...
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Old Sep 17, 2003 | 12:26 PM
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IMO VTEC > iVTEC
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Old Sep 17, 2003 | 01:11 PM
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Originally posted by Shore 96 Teg
IMO VTEC > iVTEC

so dual stage is better than continuously changing right?

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Old Sep 17, 2003 | 02:08 PM
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Originally posted by RB
so dual stage is better than continuously changing right?

I dunno...only 2 cars i drove w/ VTEC were a Civic Si with iVTEC and a Prelude 4th gen VTEC. I felt more kick with the Lude.

Like i said IMO = In My Opinion
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Old Sep 17, 2003 | 07:40 PM
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iVTEC > VTEC

Vtec only changes to a bigger cam lobe. iVtec does this, and also allows for on the fly timing changes of the intake cam as stated above.

Hondata has been working on a way to control the cam timing through the ECU...when they do, they'll be able to optimize it for performance.
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Old Sep 17, 2003 | 08:45 PM
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PLUS, with i-VTEC you can safely run lower octane (87-89) with no performance or fuel loss.
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Old Sep 17, 2003 | 09:18 PM
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i like vtech it helps me have really great phone conversations
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Old Sep 17, 2003 | 09:31 PM
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Originally posted by Xymox007
PLUS, with i-VTEC you can safely run lower octane (87-89) with no performance or fuel loss.

No, the compression ratio dictates the octane gas you need to run, it has nothing to do with iVtec.
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