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Old 09-30-2006, 04:24 PM   #1
R0DENT
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Member#: 111756
Join Date: Apr 2006
Chapter/Region: RMIC
Vehicle:
04 WRB STi
Few Mods...

Default How should I wire the trigger wire for the SafeIjnection?

I got a new Meth kit (Snow Performance) and I have a question on how to wire the SafeInjection. Its all pretty much straight forward but I was looking for a way to wire up the 12v trigger wire. It sends a 12v signal when it does detect water in the line. Can I somehow wire this to my Perrin EBC so it opens up and now allow more boost? I don't want the 12v trigger going back through the wire harness and damage my ECU/Utec. Maybe use a diode?

I know I could use the WG solenoid they sell but I'm trying to keep things simple and less clutter under teh hood.

http://www.snowperformance.net/prodd...p?prod=SI%2D10
Quote:
For years, many have wanted to use water/methanol injection but have not taken advantage of the power increases do to safety concerns. Designed as an ad-on to the Boost Cooler® water/methanol injection system, Safe Injection™ provides for a safe tune in those instances where no injection is present and an aggressive tune is utilized.“ This system reduces boost or timing anytime injection quantity goes below a set point (e.g. if reservoir level goes too low) making the tune instantly conservative for the ultimate in safe water/methanol injection.

Operation
The SI-10 and SI-05 monitor the flow of Water/Methanol in the system. When flow drops below 0.10 Gallons per Minute (GPM), equal to 378 ml/min,( 0.05 GPM or175ml/min on the SI-05) the fault trigger will go to a high state of 12 volts. In addition to the supplied red LED, this trigger can be used to signal the following:
1. an ignition/timing controller such as an MSD timing computer if using an MSD ignition
2. aftermarket engine computer
3. a solenoid such that boost is reduced in a wastegated turbo set-up. ( $39.95 list. See below.)
4. a solenoid to evacuate boost on a supercharged set-up.
The trigger signal can deliver up to 1.5 amps to drive a solenoid or relay.
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Old 10-02-2006, 11:54 AM   #2
tasq
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Member#: 62362
Join Date: May 2004
Chapter/Region: RMIC
Location: Denver, CO
Vehicle:
2005 wrx
CGM

Default

Without a stand alone like autotronics, I'm pretty sure it isn't possible to change the boost map on the fly with a 12V signal... Honestly, if I were you, I would just get the solenoid, and hook it up that way... If you do it right, you can't even tell it is there. Here is a diagram of how mine works



Let me know if you have any other questions...
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Old 10-02-2006, 03:50 PM   #3
R0DENT
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Join Date: Apr 2006
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04 WRB STi
Few Mods...

Default

Quote:
Originally Posted by tasq View Post
Without a stand alone like autotronics, I'm pretty sure it isn't possible to change the boost map on the fly with a 12V signal... Honestly, if I were you, I would just get the solenoid, and hook it up that way... If you do it right, you can't even tell it is there. Here is a diagram of how mine works

Let me know if you have any other questions...
You make it look too easy! I was thinking there was going to be more tubes and clutter. I already got the solenoid so I'll get that installed per your drawing.

THANKS!
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Old 10-02-2006, 04:09 PM   #4
tasq
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Location: Denver, CO
Vehicle:
2005 wrx
CGM

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Quote:
Originally Posted by R0DENT View Post
You make it look too easy! I was thinking there was going to be more tubes and clutter. I already got the solenoid so I'll get that installed per your drawing.

THANKS!
Glad to help
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Old 10-03-2006, 04:37 PM   #5
Ultimate Collision Center
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Chapter/Region: Tri-State
Location: Peekskill
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Yea the solenoid is pretty straightforward install, much easier than what you were about to try and do...
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Old 10-03-2006, 04:38 PM   #6
Ultimate Collision Center
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Location: Peekskill
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