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Anyone still running a HKS VPC???


batman21
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Galant VR-4 org Post #: 671297 posted 07/20/08 02:34 PM     Remind Me!  Send Private Message   Edit Post      
if you are, what type of map sensor are you using?? my map sensor is crappin out and once i start to hit 15psi, tha fuel starts to cut out and ive already added 15% of fuel. so my tuner says i need a new map sensor, but since HKS has discontinued the VPC and parts for it, im not sure what mapsensor to use. also would anyone recommend goin back to the maf setup and get a ecu chip or apexi safc?? any infor or suggestions would be great. heres my setup for reference:

starion intercooler
Greddy 18g turbo
3000gt VR4 fuel pump
RC 550cc injectors
HKS VPC,GCC,EVC
3in turbo back thermal exhaust
stock engine with mild head port-n-polish


Edited by batman21 (07/26/08 06:28 PM)

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Nate
May I have your autograph?


Galant VR-4 org Post #: 671311 posted 07/20/08 03:19 PM     Remind Me!  Send Private Message   Edit Post      
I still use a VPC, but I'm still using the HKS MAP sensors. I'm told that you could use a GM 3bar sensor, and wire it in, but I've never tried it, and I worry about the calibration of GM sensors to start with. You could probably try the AEM MAP sensor.

As for going back to the MAF/AFC setup, that depends on how easily your car converts back to a MAF setup, and whether you want to try using a different sensor.

Nate

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keydiver
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Galant VR-4 org Post #: 671728 posted 07/21/08 05:08 PM     Remind Me!  Send Private Message   Edit Post      
Part of that decision is whether you have an EPROM ECU to compensate correctly for a different MAS and the injectors. You should be able to use a GM 3-bar MAP sensor without an issues, as I believe the stock HKS sensor maxxed out at just about 3 bar.

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Lonewolf64
Obviously the answer is......
889/1000
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Galant VR-4 org Post #: 671787 posted 07/21/08 08:37 PM     Remind Me!  Send Private Message   Edit Post      
My brother uses a GM 3bar with his VPC with no problems. It runs the same with it as it did with the HKS original sensor. As for calibration, if it is an OEM part for GM cars, obviously it will work like it should.



1992 Galant VR-4 #889
1991 Galant VR-4 #1247
2007 Civic Si DD

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Brianawd
Higher Launch RPM
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Galant VR-4 org Post #: 671788 posted 07/21/08 08:38 PM     Remind Me!  Send Private Message   Edit Post      
Call buschur racing if using the vpc. To him its the greatest tunning tool out there.



1992 Gaylant vr4 #439/1000
11.1at131 562awhp/484awtq
E85 FP3052 parted out
05 EB EVO SSL 11.48at124mph
450awhp/400awtq New 2.3 e85 hks 7460r
05 JEEP liberty CRD DD/ski slut
200hp/385tq


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BoostedAWD91
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815/2000


Galant VR-4 org Post #: 672060 posted 07/22/08 01:57 PM     Remind Me!  Send Private Message   Edit Post      
i used to run the VPC for a few years till i sold it which i now regret. If anyone is sellling one im looking to pick one back up again



#815/2000- Lexus Pearl White


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ghostinthevr4
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Galant VR-4 org Post #: 672095 posted 07/22/08 03:35 PM     Remind Me!  Send Private Message   Edit Post      
Your in luck I have one with the GCC and GM sensor send me a PM.



I found the anti-lag.

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Launch
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Galant VR-4 org Post #: 672111 posted 07/22/08 04:27 PM     Remind Me!  Send Private Message   Edit Post      
Im sucha VPC whore I got 2 complete setups, and a set of brand new, never used sensors from hks. One of my GVR4 will be getting a vpc with its 2.3L, the other I might use in my Colt, or my GSX, or my other GVR4

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Lonewolf64
Obviously the answer is......
889/1000
1247/2000


Galant VR-4 org Post #: 672158 posted 07/22/08 06:49 PM     Remind Me!  Send Private Message   Edit Post      
Is it impossible to buy a new VPC or something? Why would anyone want to run VPC vs DSMlink?



1992 Galant VR-4 #889
1991 Galant VR-4 #1247
2007 Civic Si DD

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BoostedAWD91
Senior Member
815/2000


Galant VR-4 org Post #: 672186 posted 07/22/08 08:40 PM     Remind Me!  Send Private Message   Edit Post      
no u cant get VPC's new anymore, they stopped making them.
They are a great for tuning, very simple to use and u dont have to keep changing things all the time, u set it once and leave it go for the most part. They are also alot cheaper than DSMlink now



#815/2000- Lexus Pearl White


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Lonewolf64
Obviously the answer is......
889/1000
1247/2000


Galant VR-4 org Post #: 672207 posted 07/22/08 10:21 PM     Remind Me!  Send Private Message   Edit Post      
As soon as the altitude or climate changes, you do have to play with the VPC. It doesn't really work too hot for my brother although I do know that some people swear by them.



1992 Galant VR-4 #889
1991 Galant VR-4 #1247
2007 Civic Si DD

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BoostedAWD91
Senior Member
815/2000


Galant VR-4 org Post #: 672924 posted 07/24/08 04:46 PM     Remind Me!  Send Private Message   Edit Post      
its been awhile since i had a vpc so i dont remember what every wire is but anyways im looking into buying one from a member and there is a cut wire in the harness and loose wire. anyone know if this is gonna cause a problem or what it goes to?




#815/2000- Lexus Pearl White


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keydiver
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Galant VR-4 org Post #: 672958 posted 07/24/08 06:15 PM     Remind Me!  Send Private Message   Edit Post      
VFAQ is your friend:
ECU Pinout

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BoostedAWD91
Senior Member
815/2000


Galant VR-4 org Post #: 673068 posted 07/24/08 11:05 PM     Remind Me!  Send Private Message   Edit Post      
i know about the ECU's pins but thats not really gonna help me. I need to know if that cut wire is gonna affect the VPC functionality and what the long wires by themself are for in the 2nd pic



#815/2000- Lexus Pearl White


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atc250r Galant VR4.org Moderator
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Galant VR-4 org Post #: 673493 posted 07/25/08 10:53 PM     Remind Me!  Send Private Message   Edit Post      
In my time playing with the VPC, the adapter harness that hooks to the ECU is the source of most VPC problems. You don't need to use that whole thing, there are a couple of ways around it. You can "trick" the ECU into seeing the baro sensor and IAT sensor with resistors even after you've removed the stock MAS or you can buy a custom chip that locks those values inside the ECU and just wire the VPC in like you would an SAFC.

John



"...if they're so into masochism, they should just really go all out and start modifying Mitsubishis. And using them as daily drivers." - Mike R.

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batman21
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Galant VR-4 org Post #: 673654 posted 07/26/08 05:15 PM     Remind Me!  Send Private Message   Edit Post      
i do have an eprom ecu. as far as wiring up the GM 3bar, how would i do that?? does anyone have some pictures or know which wires i have to match up. thanks

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Hop
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Galant VR-4 org Post #: 673661 posted 07/26/08 05:50 PM     Remind Me!  Send Private Message   Edit Post      
I've still got a VPC but it's not in the car anymore. I started burning my own ECU chips so took it out & went with a 2G MAS & big 880cc injectors. I didn't notice much of a difference in spool or max power but my chips are a lot more daily drivable.

I guess I should post the VPC for sale if there's still interest in them.

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batman21
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Galant VR-4 org Post #: 673665 posted 07/26/08 06:09 PM     Remind Me!  Send Private Message   Edit Post      
id take that map sensor off your hands

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keydiver
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Galant VR-4 org Post #: 673789 posted 07/27/08 09:03 AM     Remind Me!  Send Private Message   Edit Post      
Quoting BoostedAWD91:

i know about the ECU's pins but thats not really gonna help me. I need to know if that cut wire is gonna affect the VPC functionality and what the long wires by themself are for in the 2nd pic




If you would PLEASE do us the favor of looking up the pin # on the ECU that those wires go to, it would GREATLY help! I wasn't trying to be a smartass posting that link, that is the information you need to give us before we can tell you if it will affect the VPC operation! Same thing with the long wires. It *appears* that they might be where someone spliced into the Karman Hz wires to run too an AFC. But, here again YOU need to tell us which wire they are spliced into. We can't get that much information from just a stupid picture!

Batman: the GM MAP sensor is just like the HKS sensor, it has 3 connections: ground, +5 volts, and the output to the VPC which varies with boost. Just trace the wires back to the harness, or read the voltages on each wire with a voltmeter, and it should be very easy to figure out. If I recall, the ECU provides the ground and +5 volts, from pins 23 and 24. You should easily be able to Google the GM MAP sensor pinout. I'd recommend buying it from a dealer that can also supply the proper 3-pin harness for it. I bought mine from a guy who mainly sells to the Buick GN guys, if I recall.

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batman21
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Galant VR-4 org Post #: 673816 posted 07/27/08 12:14 PM     Remind Me!  Send Private Message   Edit Post      
thanks for the info, im looking into buyin one this week

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BoostedAWD91
Senior Member
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Galant VR-4 org Post #: 674117 posted 07/28/08 12:37 PM     Remind Me!  Send Private Message   Edit Post      
Quoting keydiver:

Quoting BoostedAWD91:

i know about the ECU's pins but thats not really gonna help me. I need to know if that cut wire is gonna affect the VPC functionality and what the long wires by themself are for in the 2nd pic




But, here again YOU need to tell us which wire they are spliced into. We can't get that much information from just a stupid picture!




The only reason i am askin the question is cause i dont have a VPC at the moment, thats a pic of one that i was considering buying so figured someone with a VPC might know off the top of there head where it goes



#815/2000- Lexus Pearl White


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keydiver
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Galant VR-4 org Post #: 674271 posted 07/28/08 06:05 PM     Remind Me!  Send Private Message   Edit Post      
OK, if you're going to make me do the work for you:
Its obvious to see that the wire cut in the top picture is the 10th one from the left of a 24-pin connector, which exactly corresponds to pin #10 of the ECU connector I gave you the link for. Pin #10 IS the Karman Hz input to the ECU, which is *supposed* to be coming from the VPC harness. The VPC creates the Karman Hz signal from the MAP, BARO, TPS, and IAT sensor inputs, and feeds that to the ECU in place of the 1G MAS Karman Hz signal. I forget which VPC harness wire it is supposed to be conencted to though, but it should be obvious.
The other picture is too low resolution to make anything out.

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BoostedAWD91
Senior Member
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Galant VR-4 org Post #: 674528 posted 07/29/08 11:05 AM     Remind Me!  Send Private Message   Edit Post   
thanks for looking it up but u didnt have to. I just wanted to know what the one wire that was byitself went to for the VPC.Yes i know the picture isnt the best but thats all i have to work with at the moment. I didnt remember if that single long wire was supposeed to be like that or if that was just screwed up. i already found out about the harness pin that had the wire cut but thanks anyways



#815/2000- Lexus Pearl White



Edited by BoostedAWD91 (07/29/08 11:08 AM)

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