Hks Vpc
all the information about the vpc/afc can be found at supraforums.com in the NA section.
vpc chips:
mk3 chip
mk4 chip
2jzge obd1 - then you need a mk3 - karmen
2jzge obd2 - then you need a mk4 chip - hotwire
vpc chips:
mk3 chip
mk4 chip
2jzge obd1 - then you need a mk3 - karmen
2jzge obd2 - then you need a mk4 chip - hotwire
Last edited by aliga; Oct 22, 2004 at 08:59 PM.
Rookie
Joined: Aug 2004
Posts: 92
Likes: 0
From: International
Dont know if its a play on words, but none of the Japanese Soarers or Supras came with an AFM. Anyways, my friend has a Skyline with RB25 and he tried to install a S-AFC when there was already a FCD on it and the ecu flipped out. Im pretty sure that the FCD -has- to go before the S-AFC for it to work. Dont know if its the same as the VPC, but something to keep in mind.
Sensei,
Consider yourself proven wrong.
Not all American tuners are dumbasses.
If you relaly did keep an open mind, you could probably learn a thing or 2 from a few of us.
http://supraforums.com/forum/showthr...light=vpc+safc
Your analogy with the 2 light dimming switches is cute and all but has nothing to do with how these 2 units work.
I'll try to lay it out for you one more time:
Our ECU receives a signal (On OBD-I cars it's a pulse while on OBD-II cars it's a 0-5V signal)
The VPC replaces the MAF and mimics the above mentioned signal based on MAP (Manifold Absolute Pressure).
With the VPC, you can control the frequency(OBD-I) OR amplitude(OBD-II) of the signal with the turn of a ****.
The probelm with the VPC is that it does not know what your RPM or throttle position is.
In order to add/remove fuel at SPECIFIC RPMs and/or throttle positions, you need a AFC whether it be APEX-i or any other.
The way you wire it is output signal from VPC comes to input of AFC, and then AFC output signal goes to input on ECU.
Someone feel free to chime in if I missed anything.
~Alan
Consider yourself proven wrong.
Not all American tuners are dumbasses.
If you relaly did keep an open mind, you could probably learn a thing or 2 from a few of us.
http://supraforums.com/forum/showthr...light=vpc+safc
Your analogy with the 2 light dimming switches is cute and all but has nothing to do with how these 2 units work.
I'll try to lay it out for you one more time:
Our ECU receives a signal (On OBD-I cars it's a pulse while on OBD-II cars it's a 0-5V signal)
The VPC replaces the MAF and mimics the above mentioned signal based on MAP (Manifold Absolute Pressure).
With the VPC, you can control the frequency(OBD-I) OR amplitude(OBD-II) of the signal with the turn of a ****.
The probelm with the VPC is that it does not know what your RPM or throttle position is.
In order to add/remove fuel at SPECIFIC RPMs and/or throttle positions, you need a AFC whether it be APEX-i or any other.
The way you wire it is output signal from VPC comes to input of AFC, and then AFC output signal goes to input on ECU.
Someone feel free to chime in if I missed anything.
~Alan
you can also wire in the afc before the vpc, this is the recommended apexi method. using this method you intercept the pressure signal from the vpc sensor, feed it to the afc, and then the afc output goes to the vpc pressure wire (i beleive it is the blue wire)
Thread Starter
Driver School Candidate
Joined: Dec 2002
Posts: 37
Likes: 0
From: Alabama
Thanks for your much need help guys.....as soon as i get my car back...im going to get that safc2 installed...which i just got yesterday 
im still looking for a chip for the vpc...and the temp and pressure sensor..so ill probably just use the safc2 for now...cause im getting low on funds 
im still looking for a chip for the vpc...and the temp and pressure sensor..so ill probably just use the safc2 for now...cause im getting low on funds
Originally posted by aliga
using this method you intercept the pressure signal from the vpc sensor, feed it to the afc
using this method you intercept the pressure signal from the vpc sensor, feed it to the afc
I have no idea what kind of output the VPC pressure sensor has but if it's 0-5V then this method would work.
Mean_Green: WHen installin the SAFC2, beware of the fact that the installation manual from APEX-i is wrong as can be.
They list the ECU pinout for SC300s from 92-00 when in reality in these years the layout o fthe pins has changed.
Best bet would be to have someone scan in the ECU layout for your year (unless you have the factory service manual - Electrical).
Good luck,
~Alan
Driver
Joined: May 2002
Posts: 111
Likes: 1
From: usa
Originally posted by SPORTcoupe
Sensei,
Consider yourself proven wrong.
Not all American tuners are dumbasses.
If you relaly did keep an open mind, you could probably learn a thing or 2 from a few of us.
http://supraforums.com/forum/showthr...light=vpc+safc
Your analogy with the 2 light dimming switches is cute and all but has nothing to do with how these 2 units work.
I'll try to lay it out for you one more time:
Our ECU receives a signal (On OBD-I cars it's a pulse while on OBD-II cars it's a 0-5V signal)
The VPC replaces the MAF and mimics the above mentioned signal based on MAP (Manifold Absolute Pressure).
With the VPC, you can control the frequency(OBD-I) OR amplitude(OBD-II) of the signal with the turn of a ****.
The probelm with the VPC is that it does not know what your RPM or throttle position is.
In order to add/remove fuel at SPECIFIC RPMs and/or throttle positions, you need a AFC whether it be APEX-i or any other.
The way you wire it is output signal from VPC comes to input of AFC, and then AFC output signal goes to input on ECU.
Someone feel free to chime in if I missed anything.
~Alan
Sensei,
Consider yourself proven wrong.
Not all American tuners are dumbasses.
If you relaly did keep an open mind, you could probably learn a thing or 2 from a few of us.
http://supraforums.com/forum/showthr...light=vpc+safc
Your analogy with the 2 light dimming switches is cute and all but has nothing to do with how these 2 units work.
I'll try to lay it out for you one more time:
Our ECU receives a signal (On OBD-I cars it's a pulse while on OBD-II cars it's a 0-5V signal)
The VPC replaces the MAF and mimics the above mentioned signal based on MAP (Manifold Absolute Pressure).
With the VPC, you can control the frequency(OBD-I) OR amplitude(OBD-II) of the signal with the turn of a ****.
The probelm with the VPC is that it does not know what your RPM or throttle position is.
In order to add/remove fuel at SPECIFIC RPMs and/or throttle positions, you need a AFC whether it be APEX-i or any other.
The way you wire it is output signal from VPC comes to input of AFC, and then AFC output signal goes to input on ECU.
Someone feel free to chime in if I missed anything.
~Alan
I already know what I’m up against, so unless you can provide your proof or even sensibly argue my technical pitches, you need to step out of the box. STRIKE ONE!
There are NO PROBLEMS with the VPC, and what you’ve laid out is a cluttered mess of words. Our argument is the power advantages between using the GCC and the S-AFC. Could you be a little more specific? How much more will the S-AFC give between each RPM over the GCC?
The VPC and F-CON are the ONLY electronic devices available today that can properly supplement the factory ecu and while removing the AFM. This is 90 percent of the reason for the power gains… the GCC, being the fine tuner is maybe responsible for the last 10 percent. The S-AFC is not capable of doing nothing more than that last 10 percent. STRIKE TWO!
Of course my analogy is not the same as with what we’re discussing, but honestly, your technical knowledge isn’t much beyond little league to me. I’m mean not to insult you, I’m just defending my knowledge from what I have experienced. If there is something that I have not experienced that truly does work, then I am most interested in learning how and why it does. It was YOU, that boldly stepped up to the plate, dissect, itemize and then critic my post. It was YOU that said these chips are readily available. Now you’re asking for someone to chime in? That’s like asking for a pinch hitter… don’t you know if you’ve missed anything? I’ll tell you what’s missing… you still haven’t provided the info to back up your claims. So let’s keep the game fair and just stick to the facts…
...not that it matters, but you probably should know, I am an American, and I’m no dumb-***; I too am a Supraforums member, since 2001... So to avoid striking out, you may wanna step back, know what your up against, and check out my stats.
Sensei
Last edited by Choritsu-shi; Oct 26, 2004 at 03:11 AM.
Oh man.
I really felt that the best thing to do is not reply because you've taken it way out of proportion, but you've personally insulted me, and I do not take kindly to this sort of thing.
Telling me my techinical knowledge is little league and following with "I’m mean not to insult you" is just pathetic.
If you're going to insult my knowledge, do it like a man.
By saying "not all american tuners are dumbasses" I was actually partially being on your side because I was implying that a lot of them are. On the other hand, I really don't see how race/ethnicity relates to techinical knowledge. I guess that's just how you were taught.
There are NO PROBLEMS with the VPC
Couldn't agree with you more. What's your point?
It comes down to this: Are you aware of the fact that there are numerous NA-T guys running well over 500 rwhp with the VPC/SAFC combo or are you not?
If you are, why are you still speaking?
If not, you've missed a few posts.
I don't give a **** about your stats. In my eyes you're a lil punk giving me the cliche "You don't know who you're messing with"
In your original post you said:
you'll need to purchase an HKS ECU wire harness adapter
You were told it wasn't so. You can Hard-Wire.
I could never understand why one would want to use an Apex-i AFC with a HKS VPC... IMO they conflict with each other.
You opinion was wrong as they do not conflict with each other.
I can list more places where you're morbidly wrong but I'm getting bored as it's too easy.
I wasn't the only one to tell you you're off on your opinions/suggestions so maybe you should listen and step off yourself.
Last but not least, I asked other to chime in because I was admitting that I'm NOT PREFECT and probably missed something here or there. I don't need anyone's help in proving your opinions are baseless because that's easy enough as is.
This is my last post on this thread and I hope you realise that I don't hate you, I just highly dislike you.
Peace.
~Alan
EDIT:
P.S. Found this little quote of your on SF:
"Unfortunately the All American Fast and Furious hype has buried the true understanding and function of what Japanese performance really is.
I must learn to control my emotions better,"
You need to stop being mad at AMERICANS because that's just where you choose to live and you DO need to learn to control your emotions.
The End.
I really felt that the best thing to do is not reply because you've taken it way out of proportion, but you've personally insulted me, and I do not take kindly to this sort of thing.
Telling me my techinical knowledge is little league and following with "I’m mean not to insult you" is just pathetic.
If you're going to insult my knowledge, do it like a man.
By saying "not all american tuners are dumbasses" I was actually partially being on your side because I was implying that a lot of them are. On the other hand, I really don't see how race/ethnicity relates to techinical knowledge. I guess that's just how you were taught.
There are NO PROBLEMS with the VPC
Couldn't agree with you more. What's your point?
It comes down to this: Are you aware of the fact that there are numerous NA-T guys running well over 500 rwhp with the VPC/SAFC combo or are you not?
If you are, why are you still speaking?
If not, you've missed a few posts.
I don't give a **** about your stats. In my eyes you're a lil punk giving me the cliche "You don't know who you're messing with"
In your original post you said:
you'll need to purchase an HKS ECU wire harness adapter
You were told it wasn't so. You can Hard-Wire.
I could never understand why one would want to use an Apex-i AFC with a HKS VPC... IMO they conflict with each other.
You opinion was wrong as they do not conflict with each other.
I can list more places where you're morbidly wrong but I'm getting bored as it's too easy.
I wasn't the only one to tell you you're off on your opinions/suggestions so maybe you should listen and step off yourself.
Last but not least, I asked other to chime in because I was admitting that I'm NOT PREFECT and probably missed something here or there. I don't need anyone's help in proving your opinions are baseless because that's easy enough as is.
This is my last post on this thread and I hope you realise that I don't hate you, I just highly dislike you.
Peace.
~Alan
EDIT:
P.S. Found this little quote of your on SF:
"Unfortunately the All American Fast and Furious hype has buried the true understanding and function of what Japanese performance really is.
I must learn to control my emotions better,"
You need to stop being mad at AMERICANS because that's just where you choose to live and you DO need to learn to control your emotions.
The End.
Last edited by SPORTcoupe; Oct 26, 2004 at 04:40 PM.
Pole Position
Joined: Nov 2001
Posts: 258
Likes: 0
From: Virginia
MeAn_GrEEn
pm me if you need something. I have a map sensor for VPC, and I can tell you where to buy the chip and all.. and pretty much what you need to know about NA-T and avoid this violent thread!!!!
sounds like fun talk up here while I was away for little bit..
very interested
choritsu-shi.. sorry that I was wrong. but personally, I dont really care if I am wrong to you or not.. poeple in this forum know what I know.
pm me if you need something. I have a map sensor for VPC, and I can tell you where to buy the chip and all.. and pretty much what you need to know about NA-T and avoid this violent thread!!!!
sounds like fun talk up here while I was away for little bit..
very interested
choritsu-shi.. sorry that I was wrong. but personally, I dont really care if I am wrong to you or not.. poeple in this forum know what I know.
Last edited by T51R; Nov 10, 2004 at 09:07 AM.
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