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Old 07-26-2006, 05:03 PM   #1
tasq
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Default Snow performance 'Safe Injection' Wrx Specific Diagram?

I need a diagram showing how the Waste Gate solonoid should be installed on the vacuum lines for my wrx...

Thanks in advance for any help! The wording on the generic guide that comes with the kit, isn't very helpful.
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Old 07-26-2006, 05:13 PM   #2
hippy
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<edited for easier instructions>There's a little plastic cover right in front of the passenger side shock tower in the engine compartment. Under it is the boost control solenoid. There are two tubes going to the boost cotnrol solenoid. Put the new solenoid between one of the tubes and the boost control solenoid. At least that's how I think it's done.

peace

Last edited by hippy; 07-26-2006 at 07:30 PM.
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Old 07-26-2006, 08:58 PM   #3
tasq
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Quote:
Originally Posted by hippy
<edited for easier instructions>There's a little plastic cover right in front of the passenger side shock tower in the engine compartment. Under it is the boost control solenoid. There are two tubes going to the boost cotnrol solenoid. Put the new solenoid between one of the tubes and the boost control solenoid. At least that's how I think it's done.

peace
See that doesn't make sense to me... If I put it BEFORE the FBCS, the the FBCS still controls WG boost. If I put it after, the FBCS controls WG boost before it even gets to the safe injection solonoid. It has to be hooked up in tandum some how... Correct me if I am wrong here, but I don't think I am.

I know someone out there has done this!

Thanks for the help
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Old 07-26-2006, 09:06 PM   #4
hippy
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The two tubes that are connected to the boost control solenoid serve the same purpose. The air goes through them and vents to keep the pressure in the tubing lower in an effort to stop the wastegate actuator from openning the wastegate. If you put the solenoid between the bcs and either of those tubes, it will do the same thing, because the solenoid is there to block the flow(just like the bcs). By blocking the flow, it will hold pressure in the tubing and make the wastegate actuator open when the pressure is high enough(wasategate spring pressure). Even if the bcs tries to let flow through, it can't because the solenoid is blocking flow and negates whatever the bcs is trying to do(no matter which side is on since the air only goes in one direction). It's basically a second bcs that's in the same line.

peace
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Old 07-26-2006, 09:10 PM   #5
tasq
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Quote:
Originally Posted by hippy
The two tubes that are connected to the boost control solenoid serve the same purpose. The air goes through them and vents to keep the pressure in the tubing lower in an effort to stop the wastegate actuator from openning the wastegate. If you put the solenoid between the bcs and either of those tubes, it will do the same thing, because the solenoid is there to block the flow. By blocking the flow, it will hold pressure in the tubing and make the wastegate actuator open when the pressure is high enough(wasategate spring pressure). Even if the bcs tries to let flow through, it can't because the solenoid is blocking flow(no matter which side is on since the air only goes in one direction).

peace
Ok, that makes total sense to me now... Sorry I was so confused... I really appreiate your time
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Old 07-26-2006, 09:10 PM   #6
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No problem, good luck man!

hippy
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Old 07-28-2006, 08:19 AM   #7
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Old 07-28-2006, 01:00 PM   #8
tasq
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Quote:
Originally Posted by ULTIMATE CC
You should make one of those for the FBCS, it would help alot of people
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Old 07-28-2006, 06:44 PM   #9
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Yea I plan on doing so at some point but its been a super busy summer with the kits and racing the weekend, come the fall I will work on that diagram along with a few others.
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Old 07-28-2006, 07:08 PM   #10
hippy
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I have a question about this. The way you have it connected(which looks fine), the solenoid would have to be normally closed to work correctly(which most solenoids are). The way I said to do it on the stock bc system would need the solenoid to be normally open or always on. Maybe I gave tasq the wrong info? I'm confused...... Is there some kinda setting on the safe-injection to differenciate, or would you have to buy a given solenoid depending on what type of boost control you're using?

hippy
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Old 07-28-2006, 07:51 PM   #11
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There are two different solenoids...
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Old 08-11-2006, 03:23 PM   #12
topshotta10
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hey i have a question about this, i have a ebc (greddy profec spec B) and the safe injection, do i still need to buy the boost solenoid from sp, or can i run the safe injection to my ebc, because i belive my ebc has the capability of receiving a external signal. Do you know about this by any chance
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Old 08-11-2006, 05:00 PM   #13
hippy
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It might be good if you could mention which ebc you're using. Either way, if your ebc can hold the boost low when it sees the signal from the flow sensor, it will work.

peace
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