Something odd about VTEC
06-01-2006, 12:44 PM
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Something odd about VTEC
I was borred yesterday so I decided to rig up a VTEC light,.. I know it's ricey but I only rigged it up to see when the VTEC actually activates and to my surprise it does come on before 4k rpm when you floor it.... when you accelerate really slowly then it activates at 4k rpm,.. It even stayed activated at 2800 rpms when I floored it and released slowly....can anybody explain to me why VTEC is acting this way???
06-01-2006, 01:00 PM
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You're running at open throttle, when you accelerate slowly, it doesn't get triggered until higher rpm's I noticed this just by flooring it going up ramps and it def kicks in quicker if you open the throttle up
06-01-2006, 01:24 PM
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Originally Posted by acuratl_2nr
I was borred yesterday so I decided to rig up a VTEC light,.. I know it's ricey but I only rigged it up to see when the VTEC actually activates and to my surprise it does come on before 4k rpm when you floor it.... when you accelerate really slowly then it activates at 4k rpm,.. It even stayed activated at 2800 rpms when I floored it and released slowly....can anybody explain to me why VTEC is acting this way???
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06-01-2006, 01:32 PM
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I'm glad i'm not the only one and that my vtec isn't fucked,,.. i'm gonna have to take out my indicator light though.. it's like a nightclub in my car lights always flashing 
06-01-2006, 01:34 PM
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Originally Posted by shineynitelite
so when your at idle and you punch it does it stay on the whole time till redline?
06-01-2006, 09:58 PM
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Originally Posted by shineynitelite
how did you hook up this vtec light
06-01-2006, 10:44 PM
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how handsome I am
Originally Posted by acuratl_2nr
nope,.. its not much really,. it's just an LED on top of my steering column...
06-02-2006, 02:12 AM
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Vtec engages after a certain RPM and if ur more than %50 on the throttle.. It doesnt make sense to switch over if ur in a high RPM but still accelerating slowly.. or downshifting..
but dont quote me on the %%percentage..
but dont quote me on the %%percentage..
06-02-2006, 08:17 AM
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Originally Posted by agranado
heh. thats pretty funny. you should wire it into your gague cluster and put a bulb in one of the boxes on the left where ABS and Gas lights are...
06-02-2006, 08:19 AM
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Originally Posted by tman89544
This is actually something that i am very interested in. Does anyone know if there are actual lights on ebay that can fit in the extra slot?
06-02-2006, 12:50 PM
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Here are some pics for the people who were interested...
The light when VTEC is disengaged...
Connection at the VTEC solenoid.
Random pics when VTEC is engaged
The light when VTEC is disengaged...
Connection at the VTEC solenoid.
Random pics when VTEC is engaged
06-02-2006, 03:02 PM
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Am I the only one that thinks this mod is alittle cheesy, or ricey?? 
call me a hater if you want, but if you want to know when VTEC engages get a VAFC-2.
call me a hater if you want, but if you want to know when VTEC engages get a VAFC-2.
06-02-2006, 03:30 PM
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Originally Posted by Prentice
Am I the only one that thinks this mod is alittle cheesy, or ricey?? call me a hater if you want, but if you want to know when VTEC engages get a VAFC-2.
call me a hater if you want, but if you want to know when VTEC engages get a VAFC-2.
06-02-2006, 03:55 PM
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Originally Posted by Prentice
Am I the only one that thinks this mod is alittle cheesy, or ricey?? call me a hater if you want, but if you want to know when VTEC engages get a VAFC-2.
call me a hater if you want, but if you want to know when VTEC engages get a VAFC-2.
The only vtec engagement light I'll ever have is my vafc-II 
06-02-2006, 07:42 PM
#29
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I thought Vtec had a set engagement point, a specific RPM. usually around 5-6k depending on model. I remember on my h22a prelude, no matter what throttle setting i was at it always kicked in at 5200 rpm, because thats whats programmed in the ECU, i know the 5th gen preludes (97-01) were the same way, so dont give me that shit about the j30 being a more technologically advance engine. If you wanted it to engage earlier or later for somereason you had to get a Vtec controller of some sort such as a VAFC.
FACE IT YOUR LIGHT IS FUCKED UP OR YOUR CAR IS VTEC HAPPY. It might just be going on because your solinoid is sensing the correct oil pressure ect....Vtec is most likey not actually engaged until that ECU set cross over point.
FACE IT YOUR LIGHT IS FUCKED UP OR YOUR CAR IS VTEC HAPPY. It might just be going on because your solinoid is sensing the correct oil pressure ect....Vtec is most likey not actually engaged until that ECU set cross over point.
06-02-2006, 08:31 PM
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Today, I did a few runs at WOT and it kicked in at about 5 grand every time. I actually even felt it kick in when before I could never feel it. This was only in 2nd gear though I didnt try 3rd.
06-02-2006, 09:33 PM
#32
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Originally Posted by Mach30SiR
I thought Vtec had a set engagement point, a specific RPM. usually around 5-6k depending on model. I remember on my h22a prelude, no matter what throttle setting i was at it always kicked in at 5200 rpm, because thats whats programmed in the ECU, i know the 5th gen preludes (97-01) were the same way, so dont give me that shit about the j30 being a more technologically advance engine. If you wanted it to engage earlier or later for somereason you had to get a Vtec controller of some sort such as a VAFC.
FACE IT YOUR LIGHT IS FUCKED UP OR YOUR CAR IS VTEC HAPPY. It might just be going on because your solinoid is sensing the correct oil pressure ect....Vtec is most likey not actually engaged until that ECU set cross over point.
FACE IT YOUR LIGHT IS FUCKED UP OR YOUR CAR IS VTEC HAPPY. It might just be going on because your solinoid is sensing the correct oil pressure ect....Vtec is most likey not actually engaged until that ECU set cross over point.
vtec will kick in at different points depending on different factors.......this has been discussed before and remember not all vtec motors are the same. just because ur prelude motor did it, that doens't mean that this motor has a set engagement point as well.
06-02-2006, 11:04 PM
#33
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Originally Posted by AS3.0CL
vtec will kick in at different points depending on different factors.......this has been discussed before and remember not all vtec motors are the same. just because ur prelude motor did it, that doens't mean that this motor has a set engagement point as well.
HENCE THE REASON THE VAFC ALLOWS YOU TO CHANGE THIS POINT.
Originally Posted by NauTiC*
Today, I did a few runs at WOT and it kicked in at about 5 grand every time. I actually even felt it kick in when before I could never feel it. This was only in 2nd gear though I didnt try 3rd.
06-02-2006, 11:12 PM
#34
Bagel Bomber
https://acurazine.com/forums/showthread.php?t=39255
enjoy the read and pleeeeeeeeeeeeeeeeeease dont tell me your J30's are more advanced than the typeS or any other Vtec honda engine for that matter that it can actually sence your throttle position and adjust the vtec cross over point accordingly, just not going to happen.
enjoy the read and pleeeeeeeeeeeeeeeeeease dont tell me your J30's are more advanced than the typeS or any other Vtec honda engine for that matter that it can actually sence your throttle position and adjust the vtec cross over point accordingly, just not going to happen.
06-02-2006, 11:18 PM
#35
Bagel Bomber
Originally Posted by syncivic
At 3600 RPM, the ECU signals a 12V actuator located on the rear cylinder head cover to pull the cable acuated butterfly open (spring returned). This Actuator is soley RPM triggered - this is your tuning tip of the day!!! ....
06-05-2006, 02:14 PM
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a lot of us over on the S2000 forum do this, as well. We have a light in the dash that isn't used and hook it up there. It's actually quite fun to watch.
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