FCD Search

That spinning thing that makes all of the cool noises. OE and Aftermarket.

Moderators: Helpinators, Moderators

Post Reply
92legacyawdturbo
First Gear
Posts: 74
Joined: Thu Aug 29, 2013 12:35 am
Location: Arvada, Colorado

FCD Search

Post by 92legacyawdturbo »

Ok so trying to find a fuel cut defender for a 92 legacy turbo 2.2t. I cant find any universal ones to work and was curious as I keep seeing wrx ones all the time. Is there a chance that a wrx one would work or could I be pointed in the correct direction so can avoid this issue. Thanks a lot for the help.
1992 Awd Legacy Turbo Sedan
Legacy777
Site Admin
Site Admin
Posts: 27748
Joined: Tue Oct 15, 2002 11:37 am
Location: Houston, Tx
Contact:

Re: FCD Search

Post by Legacy777 »

Most, if not all FCD's work the same way. They clamp, or keep the MAP voltage from going above a certain point. This effectively eliminates the stock fuel cut. The trick is that different cars are setup with different MAP sensors and different fuel cut points. So if you can find a FCD that is adjustable, you should be able to make it work on your legacy.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
92legacyawdturbo
First Gear
Posts: 74
Joined: Thu Aug 29, 2013 12:35 am
Location: Arvada, Colorado

Re: FCD Search

Post by 92legacyawdturbo »

Ok so could I get some help in the right direction as where to go such as running a wrx one may work or if I look for one if it says adjustable that may work as well.

Something like this:
http://www.ebay.com/itm/Turbosmart-Fuel ... fe&vxp=mtr
Last edited by 92legacyawdturbo on Sun Sep 22, 2013 11:25 pm, edited 1 time in total.
1992 Awd Legacy Turbo Sedan
Legacy777
Site Admin
Site Admin
Posts: 27748
Joined: Tue Oct 15, 2002 11:37 am
Location: Houston, Tx
Contact:

Re: FCD Search

Post by Legacy777 »

If you can post a wiring diagram of one you're interested in or at least what wiring connections are there, I can provide you some input on the wiring.

As for a particular FCD, hopefully some others can provide input.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
92legacyawdturbo
First Gear
Posts: 74
Joined: Thu Aug 29, 2013 12:35 am
Location: Arvada, Colorado

Re: FCD Search

Post by 92legacyawdturbo »

1992 Awd Legacy Turbo Sedan
Legacy777
Site Admin
Site Admin
Posts: 27748
Joined: Tue Oct 15, 2002 11:37 am
Location: Houston, Tx
Contact:

Re: FCD Search

Post by Legacy777 »

Either "should" work. The instructions for the DSP on their ebay page aren't exactly correct. I would hope they have better instructions that come with it.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
92legacyawdturbo
First Gear
Posts: 74
Joined: Thu Aug 29, 2013 12:35 am
Location: Arvada, Colorado

Re: FCD Search

Post by 92legacyawdturbo »

Yea I was hoping it would be more accurate however I can email them and find out and see what they say on it. Just need to get it figured out for now is all. Thanks again
1992 Awd Legacy Turbo Sedan
Baddog
Second Gear
Posts: 256
Joined: Wed May 19, 2010 2:59 am
Location: Portland, Oregon

Re: FCD Search

Post by Baddog »

Funny I found this thread. Just tried to install an HKD FCD Today. I ran a ground to the chassis and power off the cigarette lighter. I then ran the white and yellow wire from the FCD to the "Map Sensor Signal" pin.

No go. I followed this pin out. Any help?

http://www.surrealmirage.com/vrg3/ecupins/
1996 Subaru Legacy L
1993 Subaru Legacy SS
1992 Subaru Legacy L
1990 Subaru Legacy L
cj91legss
Fifth Gear
Posts: 6317
Joined: Fri Jun 20, 2008 8:17 am
Location: Lakewood, Wa 98439
Contact:

Re: FCD Search

Post by cj91legss »

Did you just run the two wires directly to the map sensor signal wire?

If you did you have to interrupt that pin. I.e. cut the wire at the ecu pin (leave a few inches before the ecu pin to work with.) One FCD wire goes to the harness side (input TO the FCD) and othe OTHER wire goes to the ecu pin (output TO the ECU.)

If You did it the way I listed above, Did you check your input and output wires from the fcd to the wire harness? Maybe you have the wires backwards?
91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, GD dash swapped, 22T/205 Hybrid 20 psi - BEAST!
93 SS Bone Stock Gone!
94 TW Bone Stock Gone!
91 SS 4EAT Sold!
98 LGT 4EAT
98 LGT Wagon 4EAT
Baddog
Second Gear
Posts: 256
Joined: Wed May 19, 2010 2:59 am
Location: Portland, Oregon

Re: FCD Search

Post by Baddog »

I tapped the two wires directly to the map signal wire. That where my issue is?

There is a white and yellow wire. I bought the FCD second hand. So no instructions as to what wire goes where.

So looks like I am supposed to run 1 wire to the ECU side and 1 to the harness side. Not all together. Any idea which one is which?
1996 Subaru Legacy L
1993 Subaru Legacy SS
1992 Subaru Legacy L
1990 Subaru Legacy L
cj91legss
Fifth Gear
Posts: 6317
Joined: Fri Jun 20, 2008 8:17 am
Location: Lakewood, Wa 98439
Contact:

Re: FCD Search

Post by cj91legss »

Yes you have to split the harness Map sensor signal wire. So yes, that is where your issue is. There are users that have installed the HKS FCD so if you search for HKS FCD you should be able to find the correct information you seek.
91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, GD dash swapped, 22T/205 Hybrid 20 psi - BEAST!
93 SS Bone Stock Gone!
94 TW Bone Stock Gone!
91 SS 4EAT Sold!
98 LGT 4EAT
98 LGT Wagon 4EAT
wtdash
Fifth Gear
Posts: 2327
Joined: Fri May 04, 2007 4:09 pm
Location: N. ID

Re: FCD Search

Post by wtdash »

Didn't read all of this so this may not help but HEAR ARE INSTRUCTIONS for Chris P FCD.

Td
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
Baddog
Second Gear
Posts: 256
Joined: Wed May 19, 2010 2:59 am
Location: Portland, Oregon

Re: FCD Search

Post by Baddog »

Those instructions didn't help much. Just made me a little more confused actually. The diagram I am using for the ECU pin out says I was into the MAP sensor signal wire. I wired it in properly last night...Or so I thought. Car wouldn't stay running and check engine light was on.

Am I supposed to wire this into the Pressure Exchange Solenoid?
1996 Subaru Legacy L
1993 Subaru Legacy SS
1992 Subaru Legacy L
1990 Subaru Legacy L
cj91legss
Fifth Gear
Posts: 6317
Joined: Fri Jun 20, 2008 8:17 am
Location: Lakewood, Wa 98439
Contact:

Re: FCD Search

Post by cj91legss »

No, MAP Sensor
91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, GD dash swapped, 22T/205 Hybrid 20 psi - BEAST!
93 SS Bone Stock Gone!
94 TW Bone Stock Gone!
91 SS 4EAT Sold!
98 LGT 4EAT
98 LGT Wagon 4EAT
Baddog
Second Gear
Posts: 256
Joined: Wed May 19, 2010 2:59 am
Location: Portland, Oregon

Re: FCD Search

Post by Baddog »

Bleh. I even tried switching the wires and everything. Unless that link I posted a few posts up is wrong for where the map signal is.
1996 Subaru Legacy L
1993 Subaru Legacy SS
1992 Subaru Legacy L
1990 Subaru Legacy L
Legacy777
Site Admin
Site Admin
Posts: 27748
Joined: Tue Oct 15, 2002 11:37 am
Location: Houston, Tx
Contact:

Re: FCD Search

Post by Legacy777 »

That diagram for the ECU I-O & MAP signal is correct. That diagram is oriented as if you are looking directly at the ECU. So make sure you have the correct wire. If you've got the correct wire, I'd try and track down some installation instructions for the HKS FCD.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

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