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#Using an AT dropping resistor in place of the BCS

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 Post subject: Using an AT dropping resistor in place of the BCS
PostPosted: Sun Oct 23, 2011 6:12 pm 
Site Admin
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Location: Houston, Tx
This info may be floating around in a couple threads, but Matt had asked me about it recently, and thought it deserved a thread.

The principle behind the mod is that when you go to a MBC or aftermarket EBC, if you don't leave the BCS plugged in you will get a CEL. Well in comes the dropping resistor. The resistance of the dropping resistor is very similar to that of the BCS, AND on the 90-91 MY's the electrical connector is identical. So you can unplug the BCS and plug in the dropping resistor and avoid a CEL.

The AT dropping resistor mounts to the back side of the turbo sensor bracket and is a good way to clean that area up. For me, I used the resistor when I was running a MBC and mounted it where the BCS used to mount.

http://main.experiencetherave.com/subar ... s/joepmbc/

Here are some pics of the BCS and the dropping resistor & their connectors

http://main.experiencetherave.com/subar ... gresistor/

From what Matt described the electrical connector is different on the 92-94 MY's so you'll need to find one from the 90-91 MY's.

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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


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Mon Oct 24, 2011 6:21 am 
Fifth Gear
Joined: Fri Jun 20, 2008 8:17 am
Posts: 5167
Location: Lakewood, Wa 98439
i have 2 dropping resistors in my garage and they both have different plugs an neither of them plug into the bcs plug. i'll get pics tomorrow.

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91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, Under the knife - Gonna be a fun whip
93 SS Bone Stock - FOR SALE! <---
94 TW Bone Stock -Gone forever
91 SS 4EAT 4.11 FOR SALE! <---
98 LGT 4EAT
98 LGT Wagon 4EAT


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Tue Oct 25, 2011 4:26 am 
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Location: Houston, Tx
What year are they from?

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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


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Tue Oct 25, 2011 4:33 am 
Fifth Gear
Joined: Fri Jun 20, 2008 8:17 am
Posts: 5167
Location: Lakewood, Wa 98439
Its been over a year since I grabbed them... i couldn't tell you.

_________________
91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, Under the knife - Gonna be a fun whip
93 SS Bone Stock - FOR SALE! <---
94 TW Bone Stock -Gone forever
91 SS 4EAT 4.11 FOR SALE! <---
98 LGT 4EAT
98 LGT Wagon 4EAT


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Tue Oct 25, 2011 5:05 am 
Fourth Gear
Joined: Tue Nov 28, 2006 8:17 am
Posts: 2068
Location: Spokane, WA
from my experience at the junkyard today, it seemed to be that the pre-facelift (90-91) had the ROUND connector which is the exact same plug as MY (91 SS) BCS plug. From what I saw, all of the 92+ resistors had a SQUARE connector. It looks to be the same device and all, but the plastic plug is different from my experience. Does the 92+ SS have a round connector for the BCS or square? Meaning that they either changed the engine harness or the BCS plug. I will try to get a pic or two of the different styles since I have a few of each.


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Wed Oct 26, 2011 4:57 am 
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Location: Houston, Tx
The 92+ BCS connector should be round. The harness I got for my ej22t conversion was from a 94 turbo Legacy if my memory serves me correctly.

_________________
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


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Wed Oct 26, 2011 5:50 am 
Fourth Gear
Joined: Tue Nov 28, 2006 8:17 am
Posts: 2068
Location: Spokane, WA
I am selling a resistor to someone who has a 93 and said it has a "square connector".
Ill send it and if it's the wrong one send him the round one haha. Will update when I find out whats up


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Sun Oct 30, 2011 10:33 pm 
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Joined: Tue Oct 15, 2002 11:37 am
Posts: 25442
Location: Houston, Tx
That's weird how there are these small discrepencies between the different model years. Silly Subaru :)

_________________
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


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 Post subject: Re: Using an AT dropping resistor in place of the BCS
PostPosted: Sun Oct 30, 2011 10:37 pm 
Fifth Gear
Joined: Fri Jun 20, 2008 8:17 am
Posts: 5167
Location: Lakewood, Wa 98439
I have a round connector one in my garage (only one i found so far)

_________________
91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, Under the knife - Gonna be a fun whip
93 SS Bone Stock - FOR SALE! <---
94 TW Bone Stock -Gone forever
91 SS 4EAT 4.11 FOR SALE! <---
98 LGT 4EAT
98 LGT Wagon 4EAT


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