»  BC-BF Legacy Discussion »  Intercooling
#AWIC folks...

Custom Search
Login | Register




Post new topic Reply to topic  [ 25 posts ] 
Author Message
 Post subject: AWIC folks...
PostPosted: Tue Nov 17, 2015 8:06 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
Almost got my setup finished and am planning to run the pump full speed with ignition on but I was wondering if anyone is running a 20g ecu with the pump speed control. Or if you are making the speed vary by other means?


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Sat Nov 21, 2015 11:20 am 
Fourth Gear
Joined: Sun Jun 10, 2007 4:35 am
Posts: 1730
Location: All over the place
I'd be surprised if anyone that doesn't have a 100% stock setup is using the variable pump speed. Most AWIC guys don't want their pumps running slower than they need to be.

_________________
93 Touring Wagon (EJ20G 5spd Swap) -- In storage while I work (and never get to play) in JDM-land.
00 Forester S/tb (predecesor to the XT) -- My JDM fling, dont tell my Touring Wagon!


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Sat Nov 21, 2015 3:51 pm 
Moderator
Moderator
Joined: Tue Aug 25, 2009 7:52 am
Posts: 4488
Location: Des Moines, Wa
If you ran the legacy ecu needed to control the awic pump, then you wouldn't be able to run a robtune. That would be a deal breaker for me.

_________________
1992 Legacy SS 5mt, reasonably modified ;)


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Sun Nov 22, 2015 12:06 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
mike-tracy wrote:
If you ran the legacy ecu needed to control the awic pump, then you wouldn't be able to run a robtune. That would be a deal breaker for me.


That's the answer I was looking for.


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Dec 11, 2015 5:33 am 
Fourth Gear
Joined: Thu Oct 17, 2002 1:39 am
Posts: 2091
Location: USA Roseville CA
Yeah just run it full speed. You may be able to figure out some way for the pump to vary its speed based on temperature, but then you'd need the ecu to get the temperature readings (which I'm not sure all the intercoolers came with), and you'd need an ecu that would control it, or you'd need to come up with some creative way to do it outside the ecu, and I'm not sure its worth the headache.

_________________
91 Pearl White Sport Sedan
04 Java Black Pearl Forester XT
2014 Volvo S60 T5
05 BMW R1200ST (excellent commuter when I don't have the pup with me)

87 Grey GL-10 Sedan (so long old buddy) - donated
97 Toyota 4Runner SR5 - sold
2002 BMW r1150rt-p - sold


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Dec 11, 2015 6:09 am 
Third Gear
Joined: Sat Dec 16, 2006 4:41 am
Posts: 722
Location: Parkville, Mo.
I think it could be done off a temp sensor in the water line or a boost sensor that would trigger the high speed with a time delay so it would keep running for a set time after getting out of the boost. I kind of like the idea of a 2 speed pump so there isn't the drag on the charging system all the time when it isn't needed.

_________________
91 Black SS 5spd. Edm lights, wrx gauges in dash, 45 degree airbox, cryoed drilled and slotted brakes. Invidia divorced downpipe with custom stainless exhaust. To be installed, aluminum a-arms, manual belts, awic.


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Sun Dec 13, 2015 7:35 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
Based on the info from the pump I'm using it only draws 8 amps max. Hell most stereos are rated for more amperage draw, so I wouldn't worry too much about it.

I like cool features like two or variable speed pumps, but complexity/cost vs. benefit are completely against doing it.

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Mon Feb 22, 2016 12:38 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
Got my setup working quite well, and it looks VERY stock. Especially since its in an Impreza. Only hiccup was I had to vacuum fill the coolant. Filling the conventional way led to air pockets that wouldn't work themselves out.

Now the last thing is brackets. Does anyone have the factory rear bracket that bolts to the trans?


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Tue Mar 01, 2016 6:33 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
Got any pictures of the setup?

I don't know of anyone that has the brackets. You may want to post in the parts shed or in the Legacy group on facebook.

How did you go about "vacuum" filling? I have filling issues as well since I don't have a bleeder opening on the radiator.

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Sun Mar 06, 2016 7:56 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
Unfortunately I didn't take any pics during the install but I will try to get some pics soon. I will say a TON of time was spent making it look like it belongs on this car. I used several bits of coolant tubes from later turbo EJ's and TIG welded a couple sections together to get the bends that I needed. I used your service manual links to get an idea of the stock routing and made it work quite well in a GC chassis. (THANK YOU for those by the way.) I ended up modifying an airbox bracket from a later EJ25 for the RH support. Of course the next day I did a clutch on a 98 RS and found the stock bracketry is very similar to what I did.

The vacuum filling was done using this little guy http://www.amazon.com/UView-550000-Airl ... B0002SRH5G The other techs I work with swear by it but I was a bit skeptical till I used it on mine. And I am using the stock Legacy radiator with the vent plug but I still had trouble without the vacuum filler.

I just got my Rob tune setup completed a couple weeks ago and everything is holding up great so far. (and it is WAY more fun to drive)


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Mon Apr 04, 2016 5:52 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
Sorry for the late reply, but thanks for the link to the vacuum filling tool.

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Wed Apr 06, 2016 5:15 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
Here is a pic of the engine bay. Disregard the wrx piping being used as a pcv pipe. I'm slowly going back through things and cleaning up some sloppiness from the swap I did 14 years ago. After watching a friend put a fmic on his rsti using the JDM bumper beam I realized I wasted way too much time trimming the usdm beam.

http://s944.photobucket.com/user/Jim_Sh ... %20Uploads


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Wed Apr 06, 2016 5:33 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
Thanks for the picture.

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Thu Apr 07, 2016 5:39 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
No problem. I wish I had time to take pictures of the piping as I went. It's almost a work of art how stock it looks. Luckily I work with a couple guys that can weld and fab just about anything I can dream up.


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Mon May 23, 2016 1:21 am 
First Gear
Joined: Sat Mar 29, 2003 5:57 am
Posts: 53
Location: Omaha, NE
Cleaned up a bunch of stuff. Located free OE PCV hoses and a stock bypass valve. The horn clears the filter by an inch or so but I'm tired of moving them so they'll stay there for now.

Image


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Jun 24, 2016 7:26 pm 
First Gear
Joined: Thu Feb 10, 2005 8:48 pm
Posts: 102
Location: Portland, OR
What model/year Subaru does the AWIC setup come from? Looking for info for a EJ22T swap into a Vanagon.

_________________
1991 Legacy Sport Sedan - 4EAT
&
1987 VW Westfalia Vanagon
- you know where this is headed


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Jun 24, 2016 7:48 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
It came on the overseas first generation Legacy/Liberty 89-93

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Jun 24, 2016 8:02 pm 
First Gear
Joined: Thu Feb 10, 2005 8:48 pm
Posts: 102
Location: Portland, OR
Nice! Yeah I've heard that the non-US Legacy models had intercoolers and produced quite a bit more HP. Do you know about how much more HP could be gained by adding an AWIC to the stock US 91 Legacy SS setup with the VF11 turbo?

_________________
1991 Legacy Sport Sedan - 4EAT
&
1987 VW Westfalia Vanagon
- you know where this is headed


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Jun 24, 2016 10:57 pm 
Moderator
Moderator
Joined: Tue Aug 25, 2009 7:52 am
Posts: 4488
Location: Des Moines, Wa
Adding an intercooler won't gain any power by itself. But... You could safely raise the boost with a manual boost controller to just under fuel cut at 13 PSI. Stock boost is 8.9 PSI so it will be noticeable for sure. It's anyone's guess how much power over the 160hp stock number that will net you. Close to 200 hp I'd imagine.

_________________
1992 Legacy SS 5mt, reasonably modified ;)


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Fri Jun 24, 2016 11:19 pm 
First Gear
Joined: Thu Feb 10, 2005 8:48 pm
Posts: 102
Location: Portland, OR
That sounds like the ticket for my Stage 0 setup. I've got the engineering chops to build a simple PID coolant temp controller with an Arduino or mini-stamp to supervise the pump. When I get there, I'll be sure to post that up here.

Have there been other US Subaru models with AWIC setups?

_________________
1991 Legacy Sport Sedan - 4EAT
&
1987 VW Westfalia Vanagon
- you know where this is headed


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Sun Jun 26, 2016 10:35 pm 
Fourth Gear
Joined: Sun Jun 10, 2007 4:35 am
Posts: 1730
Location: All over the place
Sadly no US models with AWICs, and nothing prior to our 2002 WRX even offered with an intercooler at all..

_________________
93 Touring Wagon (EJ20G 5spd Swap) -- In storage while I work (and never get to play) in JDM-land.
00 Forester S/tb (predecesor to the XT) -- My JDM fling, dont tell my Touring Wagon!


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Mon Oct 10, 2016 11:53 am 
First Gear
Joined: Fri Dec 19, 2014 8:39 am
Posts: 121
Location: Akron, OH
Just to add my 2 cents here, but I've been pouring over the OE Legacy Intercooler control logic (according to the FSM) and it seems to be strictly based upon throttle opening percentage. There's a table that says when the pump runs full speed, but it essentially runs as soon as the ignition is switched on. The wiring feeds directly to relay 1 and the dropping resistor, then the pump. The ECU only controls the full speed relay 2 which bypasses the resistor.

According to the FSM, the pump goes in to overdrive at 80% throttle opening. I'd imagine you can run it as a low speed full time if you had a larger heat exchanger up front.

_________________
1991 Legacy SS (BC) EJ22T // 4EAT // Pewter Metallic (Sold)
1991 Legacy SS (BC) EJ22T // 5MT // Rio Red (Sold)

1991 Legacy SSRS (BC) EJ20G (Full COP and AWIC Swap) // 5MT // White Pearl Tri-Coat Africa Rally replica in progress.


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Tue Nov 01, 2016 11:30 am 
First Gear
Joined: Fri Dec 19, 2014 8:39 am
Posts: 121
Location: Akron, OH
My Legacy 20G is running the variable speed control. You can bypass it by jumping the dropping resistor and it will run at full speed with ignition on.

I plan on going with an ESL in the future for any management upgrades, so keeping the two step pump is possible.

I'm keeping the low speed as I don't want to burn-out the pump and I'm still on the VF12.

_________________
1991 Legacy SS (BC) EJ22T // 4EAT // Pewter Metallic (Sold)
1991 Legacy SS (BC) EJ22T // 5MT // Rio Red (Sold)

1991 Legacy SSRS (BC) EJ20G (Full COP and AWIC Swap) // 5MT // White Pearl Tri-Coat Africa Rally replica in progress.


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Tue Nov 01, 2016 9:06 pm 
Fifth Gear
Joined: Mon Mar 08, 2004 2:30 am
Posts: 2269
Location: Auburn, WA
I was using the Ford Mustang pump and if you are looking to upgrade it flows quite a bit more and works good on single speed.


Sent from my iPhone using Tapatalk

_________________
Yes I have too many Subarus
No you can't have one
05 GD-STI
01- RS- Swapped-07 STI
00- GF
93 SS- "the original Robtune"


Profile  Offline
Reply with quote  
 Post subject: Re: AWIC folks...
PostPosted: Thu Nov 24, 2016 4:08 am 
Fourth Gear
Joined: Sun Jun 10, 2007 4:35 am
Posts: 1730
Location: All over the place
Ford, GM, and Mercedes AWIC parts can be found dirt cheap and are designed for 380-600+hp systems, definitely worth looking into for pumps and front heat exchangers.

_________________
93 Touring Wagon (EJ20G 5spd Swap) -- In storage while I work (and never get to play) in JDM-land.
00 Forester S/tb (predecesor to the XT) -- My JDM fling, dont tell my Touring Wagon!


Profile  Offline
Reply with quote  

Display posts from previous:  Sort by  

Post new topic Reply to topic  [ 25 posts ] 


Who is online

Users browsing this forum: No registered users and 3 guests

Panel

Top You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
Search for:
Jump to:  

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Dizayn Ercan Koc