so would it be fesible to cut the vtec signal wire, and put a switch or button there so i can run without vtec... or press or activate the switch to engage it? cause if the ecu is sending the signal, but the engine is not recieving it.... it wont "kick in" correct? any thoughts?
also.. would this trigger any of the check engine lights?
ummm... why? I don't know if theres gonna be enough lift to let sufficient air in to redline on the low profile.
You may trip a CEL if the system looks to see if the solenoid is there, and there's a switch blocking it.
You may trip a CEL if the system looks to see if the solenoid is there, and there's a switch blocking it.
im just curious as to why you would want to do this?
the vtec doesnt offer you any serious performance gains, nor does it really kill that much gas mileage
the vtec doesnt offer you any serious performance gains, nor does it really kill that much gas mileage
to my knowledge all you would have to do is run a switch in line to the vtec wire on teh ecu (green with a yellow stripe if i remember correctly on a white plug)\
i have an lx, so i dont have the vtec, so i may be wrong on the color of the wire
i have an lx, so i dont have the vtec, so i may be wrong on the color of the wire
correct me if im wrong.....
traditional engines (non vtec) are tuned to either have max power at low or high rpms, but not both. since civics are economy cars, low end power is needed because economy cars arent highreving anyways, cause that is bad for gas mileage. an engine designed for low-end power wont have much power up high. that was why vtec was made by honda, to have their originally tuned engines that have most of their power at low rpm to have good power at high rpm as well.
so with the vtec button, lets say you engage vtec manually at lets say 3000 rpm, wouldnt that result in less power than if it wasnt in vtec since vtec is designed for high rpm power output and not low power output?
am i making sense?!?!?!?
traditional engines (non vtec) are tuned to either have max power at low or high rpms, but not both. since civics are economy cars, low end power is needed because economy cars arent highreving anyways, cause that is bad for gas mileage. an engine designed for low-end power wont have much power up high. that was why vtec was made by honda, to have their originally tuned engines that have most of their power at low rpm to have good power at high rpm as well.
so with the vtec button, lets say you engage vtec manually at lets say 3000 rpm, wouldnt that result in less power than if it wasnt in vtec since vtec is designed for high rpm power output and not low power output?
am i making sense?!?!?!?
Quote:
Originally posted by skarteez
correct me if im wrong.....
traditional engines (non vtec) are tuned to either have max power at low or high rpms, but not both. since civics are economy cars, low end power is needed because economy cars arent highreving anyways, cause that is bad for gas mileage. an engine designed for low-end power wont have much power up high. that was why vtec was made by honda, to have their originally tuned engines that have most of their power at low rpm to have good power at high rpm as well.
so with the vtec button, lets say you engage vtec manually at lets say 3000 rpm, wouldnt that result in less power than if it wasnt in vtec since vtec is designed for high rpm power output and not low power output?
am i making sense?!?!?!?
Your just wrong in every sense of the word. Furthermore VTEC in your car... can be much better controlled by a computer... than by you... in your car.... with a button. VTEC engages at different point depending on your agressiveness as a driver. If you slam down the gas VTEC will engage sooner than if you slow accelerate. So it wont engage and "ruin" gas milage.Originally posted by skarteez
correct me if im wrong.....
traditional engines (non vtec) are tuned to either have max power at low or high rpms, but not both. since civics are economy cars, low end power is needed because economy cars arent highreving anyways, cause that is bad for gas mileage. an engine designed for low-end power wont have much power up high. that was why vtec was made by honda, to have their originally tuned engines that have most of their power at low rpm to have good power at high rpm as well.
so with the vtec button, lets say you engage vtec manually at lets say 3000 rpm, wouldnt that result in less power than if it wasnt in vtec since vtec is designed for high rpm power output and not low power output?
am i making sense?!?!?!?
a way u might be able to do it tho is cut the wire and change it to a 12 volt signal from the radio or somethign and then add a switch.. that might work i am not sure.... and if u wanted it to engage normaly add another switch and hook it up tot that line.. and just make sure both switchs arnt on at the same timee.. right?
i would 2 but i am saying thats a way u could do it
Quote:
Originally posted by khmaitiger
a way u might be able to do it tho is cut the wire and change it to a 12 volt signal from the radio or somethign and then add a switch.. that might work i am not sure.... and if u wanted it to engage normaly add another switch and hook it up tot that line.. and just make sure both switchs arnt on at the same timee.. right?
a non-risky non ghetto way would be to use a relay and 2 switches.Originally posted by khmaitiger
a way u might be able to do it tho is cut the wire and change it to a 12 volt signal from the radio or somethign and then add a switch.. that might work i am not sure.... and if u wanted it to engage normaly add another switch and hook it up tot that line.. and just make sure both switchs arnt on at the same timee.. right?
a relay has 5 positions on it, 87A (signal sent when relay isnt powered), 87 (signal sent when relay is powered), 85 and 86 (the 2 you must give power and ground to to activate the relay, the order nor side nor which is switch doesnt matter), and 30, the signal sent.
youd want to take the stock wire, and take one side of the wire, and run it to 30. the other side youd hook up to 87a. now youd take a switched 12v signal and route it to 87. you then ground either 85 or 86, and hook up a diff switched 12v signal to the one that isnt grounded.
your switch hooked up to 85 or 86 would then override the stock vtec control by the ecu
your switch hooked to 87 would then let you turn vtec on at your leisure.
now your manual vtec engagement switch wont work unless the vtec override switch is on
lets see if i can draw a diagram on paintbrush
When doing the DIY vtec light, I accidently grounded the wrong wire, and my vtec didn't turn on, which promptly made the check engine light come on, and it sounded really bad.
because you probably ended up shorting out your ecu in the process
nope, just the vtec line, since the spliced wire that was going from the ecu, touched the grounding point, if the ecu shorted, wouldn't the car have just died?
-Mark
-Mark
then you shorted out yoru vtec....
congratulations, yorue now the proud owner of a civic lx
congratulations, yorue now the proud owner of a civic lx
it didn't short the actual solonoid, what it did was prevent the signal from being sent, so the vtec didn't engage, as a result, the check engine light came on, and the honda techs were very confused...
my vtec still works, it just shut off while that line was being shorted
my vtec still works, it just shut off while that line was being shorted
