[CIVICsTyLin]

hi every1...while i was making a vtec indicator i wasnt thinking and attached a wire to the battery instead of grounding..as you may be aware of...the car sends an electric current ot the v-tec soldind to turn on the vtec..so thats what i did..i started my car and vtec was on...but it messed it up..i couldnt rev past 5500 and my check engine light was on..i guess thats why aftermarket controlers only let u engage at 2200 or around there...but does any1 think this is safe or it would work to connect a toggle switch and a battery to the vtec soldnid(cant spell it) for a homemade vtec controller..an ideas??does any1 knoe the voltage or how much current is flowing through the wire when vtec is engaged???thanks alot..if this could be done, it would benifit alot of people...

 

[dragturbocivic]

I don't know if that sounds very safe or right. but if it works for you then use it. I went out and spent 340 dollars on the APEX VAFC. Well I hope itr turns out right man let me know so I can spread the word.

 

[civperc]

man, I wouldn't go messing around with the vtec like that, just go for a V-AFC

 

[b16a ferio]

Oh man, that's really bad. You are gonna f*** something up by making VTEC engaged all the time. There is definately NOT enough oil pressure to engage the VTEC solenoid properly anywhere lower than like 4000rpms. Get yourself an Apexi VAFC(like me and probably many others did) and you will be safe and you can also modify fuel curves for various engine rpms and for the VTEC unmatch point (difference between modified VTEC point and stock VTEC point). VAFC is also very pretty

 

[djmano]

i believe its spelled "solenoid" ....and you gotta post your gas mileage after running on 24/7 vtec just for kicks

 

[Bryanmoe]

i wouldnt go messing with your vtec engagement unless you know what youre doing man! Homemade = not good imo

 

[GreenMachine]

There is a section to make a homemade vtec controller on www.jdmfan.com. Im not really sure how it works but I know it uses a shift light. Check it out and see if its close to what you have. Later

 

[CIVICsTyLin]

haha yea..i talked 2 my buddy(who is a honda mechanic)and he said "ARE YOU CRAZY?!?!!" so i guess that means dont mess with it...but if i have anymore crazy ideas ill post em...oh by the way...if u dont wanna spend alot of money for spark plug wireswhat u can do is wrap them in electrical tape...any color you want!!! i did that to my friends car...fooled every1!!!! if u want u can wrap ur whole engine in tape!!=0P..that would be some funny $h!t

 

[DOHC EF3]

most aftermarket ECU's or even tuners turn their VTEC engagement point UP not down..........my roomates VTEC dont hit til 6k redlines at 9k mugen b16 ecu

 

[ck98vteC]

I dunno about altering VTEC by some homemade ghettofabalous contraption, a homemade intake is one thing. But altering things like fuel mapping, and intake and exhaust lift duration intervals is quite another. So unless your a rocket scientist or enjoy getting new engines frequently I would fork over some dough for the real thing. But the thought does sound tempting...Thou shall not ghettofy VTEC...

 

[Mikeb]

DO NOT MAKE A HOMEMADE VTEC CONTROLLER you will mess up your engine. WHen vtec engages more than just your valves start doing something different, your computer switches to a different fuel map, you ignition timing advances or retards as needed and what not.

IF you just change vtec engagement, you ecu doesn't know its in vtec yet so it does not make all the correct vtec things happen.

This why the apex'i v-afc has a vtec fuel correction function.

High revs-fuel-lubrication=dead motor.

 

[brunob16]

The computer knows when VTEC is on by the VTEC oil pressure sensor. When VTEC is on the oil pressure senses the oil going through and tells the computer to switch to VTEC mode...which I believe is more fuel from 4000 to 8000 only. The switch idea would work but only work well at above 4000 for more fuel. Just turn it on when you see 4000!

It won't fuck anything up though unless your under the 4000 rpm mark. Thing is I just bought a rpm switch to activate my VTEC but I need to know the voltage too before I wire anything. If anyone knows the voltage at the solenoid please post!!!

 

[lshybrid195]

to brunob16
wat kinda rpm activate switch u bought and also u are goin to need to buy a relay

 

[brunob16]

I bought a MSD RPM switch...why do I need a relay???

 

[b20zciVHATCHBK]

there's a proper way of tapping into your vtec...a friend of mine wired his to a switch to turn on his vtec whenever he wanted to...if you wanna do this, do it right and do your research...or like what everyone else says..get the VAFC

 

[Biff]

The way I figure it, Honda set the VTEC engagement point where it did for a reason. Messing around with it really isn't gonna make the car any faster. Nothing more than a novelty really.

 

[b20zciVHATCHBK]

The way I figure it, Honda set the VTEC engagement point where it did for a reason. Messing around with it really isn't gonna make the car any faster. Nothing more than a novelty really.

well...actually HONDA set the VTEC engagement point for several reasons...one of those reasons is the due to the powerban drop due to the VTEC and another is it's effects to the engines performance...

VAFC's and other VTEC controller's allow you to set your VTEC at different points...messing around with the VTEC engagement can actually eliminate most of the powerban dip from VTEC...there was a past issue on APEXi's VTEC CONTROLLERS in IMPORT TUNER...

 

[sonictronic]

WHen vtec engages more than just your valves start doing something different, your computer switches to a different fuel map, you ignition timing advances or retards as needed and what not.

Exactly, if you engage vtec too early you could end up bending a valve. Plus if there is not enough fuel in the cylinder at all times you can get detonation which will ruin your engine.

 

[slappy95633]

there's a proper way of tapping into your vtec...a friend of mine wired his to a switch to turn on his vtec whenever he wanted to...if you wanna do this, do it right and do your research...or like what everyone else says..get the VAFC

yes there is a way i have done it without any problems... i just installed a push button switch on my floor board and hit it around 4500 but the trick is that you run one wire from the battery to the switch and then unplug the v-tec solenoid and hook up the other wire to the v-tec solenoid then hit the switch any ware after 4000 but you will have a check engine light on because of the v-tec solenoid not being plugged into the wiring harness... and the reason you have to do this is because if you keep it hooked up then it will send the battery voltage back thru the line to your ecu and fry it.....

 

[Randomhero]

:idiots