EVIL Hx Coupe

I have a 2001 Civic EX = Sohc VTEC. How can I add a switch to turn vtec on and off whenever i want to?????

Thanks in advance.

Kamin

um why would you want to do this
but tap into your vtec solenoid wire and run a switch into the cabin.
i dont know the pinout on the ecu but if someone does you can just tap it off that.
just so you know that wont allow you to turn it on or off whenever you want to
just allows it to turn on when you pass the vtec crossover.


[Modified by KAMiN, 8:11 AM 2/16/2002]

94HybridEX

Yeah I kinda had the same question. I would like to know how I could turn V Tech on whenever i turn my strobes and light up nossles on? Could I rig it up to one of my switches for my hydraulics?

Kris

Turn off vtec?????? why to make your car a sleeper

00-ITR-373

Here's my take on why he would want to:

VAFC...tuning plus you can lower your VTEC engagement point to smooth out the horsepower curve...and a few more horses in the midrange.

But, for some owners...$300-400 is kind of pricey! And...if they could acheive the vtec lowering point with a switch for say $15 from Radio Shack....they would be very happy.

This is my opinion.

B18C5-EH2

Like you can even hear the SOHC VTEC anyways

Please explain exactly what you're wanting, becaue at this point it seems as though you want a way to turn the VTEC off, but why?

EVIL Hx Coupe

I'm not trying to be no sleeper... I wanted to know if there was a way i could lower the vtec engagement point without having to buy a Vtec controler. Its not my car anyways i was just trying to help a friend.

Some of you guys try to help but others just try to make fun of people. I don't know a lot about engines and all that junk thats why I come here and ask.

Strobes??? Hydros???? 5" tach??? Hahahaha Never ........


[Modified by Boost Pressure, 10:55 AM 2/16/2002]

Kris

strobes lights are the ****.........

.........on fire trucks

Feuerraeder

I'd really recommend that you NOT lower your VTEC engagement point more than 500 rpm. My guess is that at low RPM's the valve opening that far disrupts the swirling of the air/fuel mixture and lowers torque. Not by much, but enough to loose a few ft/lbs or torque. My friends got a 2001 ITR with a VAFC, and he only lowered the VTEC engagement point 200 rpm, any farther and he lost power. I have dyno sheets to verify this, and as sonn as I can get ahold of him I'll post them. Aside from that, a simple switch will keep the factory ecu of the non VTEC fuel map, which will only make your engine run lean. If you wanna play with VTEC, buy a good controller.

Feuerraeder

Okay here they are
https://honda-tech.com/zerothread?id=102834

dirtySOHC's

if your car is not tuned correctly to a lower VTEC engagement then you shouldnt mess with it.

riot

...nuff said.

-ryan

si00000

Also, activation of Vtec by a switch as opposed to ECM control would not provide the correct fuel maps.

00-ITR-373

You can hit VTEC in first, and you're not going 30 mph...so I'd say you don't have to be going 30 to activate it.

Kamin

its 20mph if im not mistaken
thats why vtec dosent work if your vss is broken/bad.

00-ITR-373

I don't know...my CX hatch doesn't have VTEC....BUT

in my Type R..there's no guessing that VTEC is definately on in First!!!

00-ITR-373

I'm curious now..it's stored for the winer...but I know I usually redline at almost exactly 30 mph...so vtec could be 20-25...I can't remember exactly. I just know I want to drive it!!