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V-TECH question?

 
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Old 02-02-2009, 01:19 AM
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V-TECH question?

I was told that you can bypass the v-tech with a toggle switch, and use it when you choose. If this is true is it a bad idea? If not done any one know how too do it.


I have 93 lude 4ws with H22A1 swap
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Old 02-02-2009, 01:35 AM
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Re: V-TECH question?

vtec...not vtech...:doh:
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Old 02-02-2009, 01:36 AM
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Re: V-TECH question?

Thanks for helpin.
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Old 02-02-2009, 01:38 AM
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Re: V-TECH question?

i have never heard of that toggle switch idea, so im not really sure...but, just curious, why do you want to do this to your car?

there are VTEC controllers that are available that allow you to set the rpm range that you want VTEC to kick in for...
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Old 02-02-2009, 01:45 AM
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Re: V-TECH question?

you basically gotta apply 12v to the vtec solenoid. I don't suggest having vtec on a switch but whatever floats your boat.

Do you have a stock p13?
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Old 02-02-2009, 01:50 AM
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Re: V-TECH question?

well i wanted to know cuz the vtec controllers are great the ones i glanced at only kick in as early as 2,000 rpms. I was thinkin gready and wanted that race motor feel whenever.

yea i have a stock p13
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Old 02-02-2009, 01:55 AM
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Re: V-TECH question?

well vtec doesn't work the best down low in the rpms.

Best way to find out where it'd be best is a get a vtec controller and put it on the dyno.

If you disrupt the VTEC solenoid wire's connection, the CEL will come on and u won't have vtec anyways.

I personally think vtec below 4k rpms on a non boosted car would be useless.
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Old 02-02-2009, 01:58 AM
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Ok thank for the info.

Acually why do you think it's useless?

do you have eather?

Last edited by twokexlv6coupe; 02-02-2009 at 03:32 PM.
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Old 02-02-2009, 02:02 AM
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Re: V-TECH question?

because you won't really make power with vtec down low. And if your racing at 2k rpms, you should be in another gear.

On a stock ECU, for vtec to engage, the coolant has to be at operating temp, you have to have enough oil pressure, and you have to be going more than 20mph.

If you could adjust vtec, you slap it on the dyno, then on the first run set vtec hi like 6500 rpm, then do another run with the vtec set lower like 3k.
Then you over lap the dyno runs, and see where it makes power and drives similar to stock
Have you looked into getting your car tuned?
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Old 02-02-2009, 02:09 AM
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yea but can't afford tuning i looked into a hondata set up and tuned i just don't have $1,000 right now.

well thanks.

Last edited by twokexlv6coupe; 02-02-2009 at 03:32 PM.
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Old 02-02-2009, 07:55 AM
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Re: V-TECH question?

i have a afc neo which allows me to set when vtec kicks in and when i set it to 4000rpm the engine sounds different but not a real big effect untill i hit 5500 rpm
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Old 02-02-2009, 09:28 AM
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Re: V-TECH question?

I know a guy that had his vtec set up 2 a switch. Some of my friends done it to his car. It was a yellow gsr with blue rims. We called it the taxi. Lol, I never rode in it tho so i dont know how good it worked and if it was worth it. I know it worked tho
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Old 02-02-2009, 10:12 AM
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Re: V-TECH question?

Yeah its really not a good or practical idea. Honda spent a lot of money designing the system. The engine is designed to run optimally on the standard cam profile upto 5500 or whatever it is and then again run optimally above that on the larger cam profile. Its like that for a reason. I see your thinking by "oh VTEC goes faster! I want it all the time!" Just not how it works tho.
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Old 02-02-2009, 12:06 PM
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Re: V-TECH question?

Quote:
Originally Posted by nevrdun View Post
Yeah its really not a good or practical idea. Honda spent a lot of money designing the system. The engine is designed to run optimally on the standard cam profile upto 5500 or whatever it is and then again run optimally above that on the larger cam profile. Its like that for a reason. I see your thinking by "oh VTEC goes faster! I want it all the time!" Just not how it works tho.
That's correct. Ideally you want a smooth power curve where VTEC engagement is a seemless cross over from low cam to high cam.
before you do put VTEC on a switch, look at dyno graphs for an h22 and see if you can tell where vtec kicks in. All motors will like VTaK at different RPM's. Honda sets it a little hi so you can actually feel what you paid for *marketing ploy*
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Old 02-02-2009, 02:12 PM
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Re: V-TECH question?

just dont vtec it... ? lol theres no need to go past 4500rpm
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Old 02-02-2009, 03:42 PM
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Re: V-TECH question?

Not a good idea. Vtec isn't just a cam lobe activation. it's a cam angle advance, and timing change.

It wouldn't make power and would run like ass if you wired it up like that. If you have bolt-ons and got a reflash or tuning to make it come in at 4500, you'd probably make power though.
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Old 02-02-2009, 03:59 PM
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Re: V-TECH question?

You gotta pay to play. Do cheap gimmicks, you'll **** your **** up and not make a bit more power in the process.
Besides, there's more you can do than mess with VTEC.
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Old 02-02-2009, 04:09 PM
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Re: V-TECH question?

Quote:
Originally Posted by PR4NDEFF View Post
Ok thank for the info.

Acually why do you think it's useless?

do you have eather?
Nobody is lying to you man. vtec is a high rpm feature. You need enough head flow to sustain the longer opening valves.

You can adjust air/fuel ratios with bolt-ons and reflashes/tunes to be able to make good gains from about 4000-4500 up, but any lower than that is pointless.
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Old 02-02-2009, 07:59 PM
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Re: V-TECH question?

thanks guy's you really cleared it up for me.
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