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Old 09-06-2006, 10:59 PM   #1
WickedRydaX
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Member#: 31900
Join Date: Jan 2003
Location: Fort Collins, Co
Default Wiring in AVCS to Hydra

I installed a 04 STi longblock into my 02 WRX that I'm using a hydra to run. I have the Hyrda installed as it should be on an 02, but now I need to know what pins (in the hyrda) the AVCS need to hooked up to. I have the STi manifold wiring harness so I have the right connectors for that end of the wiring but can't a pin out of the hyrda. Also does anyone know what I can get some of the pins that install into the hydra connectors?
ThankS
MCL
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Old 09-07-2006, 08:12 AM   #2
Element Tuning
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Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
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673 WHP Element
Tuning Pro Comp Engine

Default

The Element Hydra for the WRX is already wired for AVCS. You just need to wire the AVCS solenoids to the JDM location.

You do not wire in the AVCS sensors, just the solenoids since we run the AVCS in open loop for the WRX units unlike the STI Hydras which are closed loop.

Here are the AVCS wiring locations.

OEM Connector B84

Pin 6 for RH AVCS Solenoid (+) (Green/Balck Wire)
Pin 12 for RH AVCS Solenoid (-)
Pin 16 for LH AVCS Solenoid (-)
Pin 17 for LH AVCS Solenoid (+) (Blue/Black Wire)

What I had my tech do was follow these pins into the Hydra harness and just installed a connector there instead of adding pins into the OEM harness.

The US STI units have a combination AVCS/CAM sensor and we run the STI Hydra with closed loop avcs. You just wire up the four AVCS solenoid wires and you’re done. Moving the pins is a waste of time so just add the 4 wires separately.

None of these are used in your application:

Add Pin 2 for AVCS Sensor (RH +)
Add Pin 3 for AVCS Sensor (RH -)
Add Pin 9 for AVCS Sensor (LH +)
Add Pin 14 for AVCS Sensor (Shield common ground)
Add Pin 15 for AVCS Sensor (LH -)

Good luck,
Phil
www.elementtuning.com
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Old 09-19-2006, 11:31 PM   #3
InfamousDX
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EDIT:: dan avON7 = the mannnnn

This is the correct harness, yes?


Last edited by InfamousDX; 09-19-2006 at 11:57 PM.
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Old 04-15-2008, 01:35 PM   #4
Chandy69
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Chapter/Region: South East
Location: Greater Miami Area
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Well i think i understand this I'm going to keep reading and then ask a question.
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