No BCS wiring?

TADpole · 09-15-2011, 04:56 PM

Not sure if this is the correct place to put this, but I bought a 2000rs with a wrx motor in it and I wanted to put in an EBCS. The problem is that there is a Manual Boost control solenoid and there is no plug for the stock BCS? The previous owner said that he removed it because he did not need it. Any idea if I can re-wire something for it? Which wires from the ecu go to it? I probably just need to start from there.

Thanks for the help

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Mulder · 09-15-2011, 04:59 PM

Moved to a better place.

TADpole · 09-15-2011, 08:09 PM

Thanks. Anyone know anything about this?

kaos200 · 09-16-2011, 01:58 PM

Was the car swapped properly? As in, is it running a wrx harness and ecu? If so I can help you trace the BCS wiring and make it work.

TADpole · 09-16-2011, 06:15 PM

Yeah, it was done right but just with a manual boost controller. I guess you could argue about whether that is done right or not. Do you know which wires I need coming out of the ecu? Grimmspeed said that the two wires that are used can switch polarity so it doesn't matter which wire goes to which wire. But I just need to find the two wires. I hope whatever I said makes sense.

kaos200 · 09-16-2011, 07:47 PM

Yeah the pin arrangement on the two doesn't matter. What year WRX motor do you have?

TADpole · 09-16-2011, 08:14 PM

I know that it is between 02 and 05 but the previous owner did not know which one because it was in another rs before that. Definitely an ej205 though.

TADpole · 09-16-2011, 09:48 PM

I think it may be from an 02 wrx.

kaos200 · 09-16-2011, 11:07 PM

The two wires are as follows:
1) On the plug furthest to the right (when looking at the ecu, with the wires leading away from you). Pin 24, a black wire with a white stripe (reading left to right, top to bottom, again with the wiring leading away from you) that is the signal wire from the ecu.

2) The power wire is the same yellow wire with blue stripe that leads to the Maf sensor. If you T into that (or find where it that spare wire is hanging around) then you're set.

TADpole · 09-16-2011, 11:34 PM

Sweet. So it is just those two and it doesn't matter which wire is which, correct?

BeBop86 · 09-17-2011, 04:27 PM

Nope, just like Grimmspeed said... polarity doesn't matter.

TADpole · 10-04-2011, 12:11 PM

Ok, I am finally getting around to getting this done. The Power wire from the Maf sensor was no problem at all. The Black and white signal wire I am having a little more trouble with. I think I found it but no matter how I count it up, it is not in pin 24. I think it is in pin 23 or 22? I can send pics if you need it but it is a black wire with a white stripe. Does this wire go to anything else? Do I need to T off of it or just run a new one?

Ds baruuuuu · 10-04-2011, 04:19 PM

here is a pic of what the plug looks like and the pin its in

TADpole · 10-04-2011, 05:57 PM

That would be right then. Just to make sure, that is with the wires pointing away from me? Is the other wire that I T off of that goes to the MAF sensor near the same area? Maybe if I back-track that one, I can find the original wire without having to run a whole new one? Although a new one might be easier?

So does the PIN 24 wire go to anything else? Should I T off of it or just get ride of it and put a new one?

Ds baruuuuu · 10-04-2011, 09:32 PM

that one is with wires pointing away. or just go to the bottom side with 5 pins and tag the middle wire. it doesnt go awaywhere else besides the ebcs. it would probably be easier to tag the wire at the ecu and run your own. no telling where they cut and taped up the wire

TADpole · 10-05-2011, 11:59 PM

Yup, just tagged it from the ecu and just T'd into the MAF wire. I am actually mounted the ebcs onto one of the screws on the intake manifold since I have a shaved engine bay and no where else to put it. Once I get my ewg up pipe and headers from grimmspeed then I can put it back together and see if it works?

Just wanted to say thanks to everyone for the advice.

09-15-2011, 04:56 PM	#1
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	No BCS wiring? Not sure if this is the correct place to put this, but I bought a 2000rs with a wrx motor in it and I wanted to put in an EBCS. The problem is that there is a Manual Boost control solenoid and there is no plug for the stock BCS? The previous owner said that he removed it because he did not need it. Any idea if I can re-wire something for it? Which wires from the ecu go to it? I probably just need to start from there. Thanks for the help * Registered users of the site do not see these ads.

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09-15-2011, 04:59 PM	#2
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	Moved to a better place.

09-15-2011, 08:09 PM	#3
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	Thanks. Anyone know anything about this?

09-16-2011, 01:58 PM	#4
kaos200 Scooby Guru Member#: 2692 Join Date: Oct 2000 Chapter/Region: SCIC Location: SoCal	Was the car swapped properly? As in, is it running a wrx harness and ecu? If so I can help you trace the BCS wiring and make it work.

09-16-2011, 06:15 PM	#5
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	Yeah, it was done right but just with a manual boost controller. I guess you could argue about whether that is done right or not. Do you know which wires I need coming out of the ecu? Grimmspeed said that the two wires that are used can switch polarity so it doesn't matter which wire goes to which wire. But I just need to find the two wires. I hope whatever I said makes sense.

09-16-2011, 07:47 PM	#6
kaos200 Scooby Guru Member#: 2692 Join Date: Oct 2000 Chapter/Region: SCIC Location: SoCal	Yeah the pin arrangement on the two doesn't matter. What year WRX motor do you have?

09-16-2011, 08:14 PM	#7
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	I know that it is between 02 and 05 but the previous owner did not know which one because it was in another rs before that. Definitely an ej205 though.

09-16-2011, 09:48 PM	#8
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	I think it may be from an 02 wrx.

09-16-2011, 11:07 PM	#9
kaos200 Scooby Guru Member#: 2692 Join Date: Oct 2000 Chapter/Region: SCIC Location: SoCal	The two wires are as follows: 1) On the plug furthest to the right (when looking at the ecu, with the wires leading away from you). Pin 24, a black wire with a white stripe (reading left to right, top to bottom, again with the wiring leading away from you) that is the signal wire from the ecu. 2) The power wire is the same yellow wire with blue stripe that leads to the Maf sensor. If you T into that (or find where it that spare wire is hanging around) then you're set.

09-16-2011, 11:34 PM	#10
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	Sweet. So it is just those two and it doesn't matter which wire is which, correct?

09-17-2011, 04:27 PM	#11
BeBop86 NASIOC Supporter Member#: 147776 Join Date: May 2007 Chapter/Region: NWIC Location: Bellingham, WA Vehicle: '02 Impreza WRX '85 Toyota Corolla	Nope, just like Grimmspeed said... polarity doesn't matter.

10-04-2011, 12:11 PM	#12
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	Ok, I am finally getting around to getting this done. The Power wire from the Maf sensor was no problem at all. The Black and white signal wire I am having a little more trouble with. I think I found it but no matter how I count it up, it is not in pin 24. I think it is in pin 23 or 22? I can send pics if you need it but it is a black wire with a white stripe. Does this wire go to anything else? Do I need to T off of it or just run a new one?

10-04-2011, 04:19 PM	#13
Ds baruuuuu Scooby Specialist Member#: 4724 Join Date: Mar 2001 Location: in my rs with the ej20 love!! Vehicle: 01 01RS brp	here is a pic of what the plug looks like and the pin its in

10-04-2011, 05:57 PM	#14
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	That would be right then. Just to make sure, that is with the wires pointing away from me? Is the other wire that I T off of that goes to the MAF sensor near the same area? Maybe if I back-track that one, I can find the original wire without having to run a whole new one? Although a new one might be easier? So does the PIN 24 wire go to anything else? Should I T off of it or just get ride of it and put a new one?

10-04-2011, 09:32 PM	#15
Ds baruuuuu Scooby Specialist Member#: 4724 Join Date: Mar 2001 Location: in my rs with the ej20 love!! Vehicle: 01 01RS brp	that one is with wires pointing away. or just go to the bottom side with 5 pins and tag the middle wire. it doesnt go awaywhere else besides the ebcs. it would probably be easier to tag the wire at the ecu and run your own. no telling where they cut and taped up the wire

10-05-2011, 11:59 PM	#16
TADpole Scooby Newbie Member#: 32760 Join Date: Feb 2003 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2000 2.5RSti Caged 07 STi For Sale 26k miles	Yup, just tagged it from the ecu and just T'd into the MAF wire. I am actually mounted the ebcs onto one of the screws on the intake manifold since I have a shaved engine bay and no where else to put it. Once I get my ewg up pipe and headers from grimmspeed then I can put it back together and see if it works? Just wanted to say thanks to everyone for the advice.