»  BC-BF Legacy Discussion »  Body, Chassis and Interior
#speedometer help!!!!!

Custom Search
Login | Register




Post new topic Reply to topic  [ 14 posts ] 
Author Message
 Post subject: speedometer help!!!!!
PostPosted: Tue Dec 27, 2016 6:34 pm 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
So sqc151 is helping me build my 93 legacy i bought from him and im looking to find a company that makes a speedometer will work with the 04 forester xt harness im using. if anyone knows of a company that makes one please let me know


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Tue Jan 03, 2017 7:10 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
The North American first gen Legacy speedo is cable driven. Are you wanting to change that so it's driven electronically, or am I missing something?

_________________
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: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 1:41 pm 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
yes. thats exactly what i want to do just need something to tell me how fast i am going. its gonna become a track car after this summer


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 4:19 pm 
Fourth Gear
Joined: Mon Aug 31, 2009 9:09 pm
Posts: 1200
Location: Rochester, WA
You could put in an aftermarket VSS or GPS speedometer from SpeedHut, AutoMeter, etc.
Or you could mod the dash and repin the harness to fit in a newer Legacy, Impreza, Forester gauge cluster with a VSS speedometer.

_________________
2005 Legacy GT Limited Wagon 5-Speed. Stock-ish ;)


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 4:46 pm 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
well im using the bulk harness out of a 04 forester xt but i'm chopping up the dash to make it custom since the forester dash is a tad bit wider then the legacy. thank you for the help guys i appreciate it


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 7:08 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27058
Location: Houston, Tx
You can just put the cable in the transmission, or are you not wanting to do that?

If you wanted to make the speedo cable electronic you'd need to get an overseas electronic speedo cable/gauge cluster.

Check out this thread for more info.

viewtopic.php?f=19&t=50076

_________________
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: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 7:42 pm 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
would i need the cable if i get the gps speedometer? http://www.speedhut.com/gauge/GR4-GPS-0 ... -high-beam) was looking at this one.


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 8:12 pm 
Moderator
Moderator
Joined: Tue Aug 25, 2009 7:52 am
Posts: 4488
Location: Des Moines, Wa
Whatever ecu you run will need a speed signal, which the GPS speedo won't provide to my knowledge. Maybe you could look and see what the Vanagon guys do when they swap in subie engines? I know there has been modern engine swaps like the ej255 etc running successfully.

_________________
1992 Legacy SS 5mt, reasonably modified ;)


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 8:35 pm 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
why is that mike?


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 9:39 pm 
Moderator
Moderator
Joined: Tue Aug 25, 2009 7:52 am
Posts: 4488
Location: Des Moines, Wa
trippywhitekid wrote:
why is that mike?


The ecu's rely on the VSS from the trans to function properly. In case of the 1st gen American legacys, the speedo cable's mechanical movement is translated into a digital signal at the speedometer, which is then sent to the ecu (Talking about on the manual trans cars).

The implication of not running a VSS signal to the ecu on the older legacys is the car will be in a kind of limp mode.

I'm not as familiar with the newer stuff, but I know that in other swaps, people have to get a VSS to the ecu to make it happy. If you're running a standalone, that may be a different story. But my buddy with an eg33 swapped GC running a Hydra, had to go out of his way to get a vss signal to it. I'll ask him what he used.

_________________
1992 Legacy SS 5mt, reasonably modified ;)


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Wed Jan 04, 2017 10:00 pm 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
even if its a manual? and sounds good if you want to pm if its easier thats fine


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Thu Jan 05, 2017 2:41 am 
Fourth Gear
Joined: Mon Aug 31, 2009 9:09 pm
Posts: 1200
Location: Rochester, WA
You need VSS to the ECU, yes. I assumed that since you are using an 04 FXT harness, you'd also be using the 04 FXT ECU and speed sensor. In that case, the speedometer can be completely standalone and not tied into the ECU's systems at all, which is why I suggested a GPS speedometer for ease of installation.

If you want to use the cable speedometer in your transmission, then the cluster provides the VSS output to the ECU. I'm not sure if a Gen1 Legacy VSS signal is compatible with an 04 FXT ECU.

_________________
2005 Legacy GT Limited Wagon 5-Speed. Stock-ish ;)


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Thu Jan 05, 2017 4:28 am 
In Neutral
Joined: Wed Aug 03, 2016 12:28 am
Posts: 23
Location: mahwah, nj
mike-tracy wrote:
trippywhitekid wrote:
why is that mike?


The ecu's rely on the VSS from the trans to function properly. In case of the 1st gen American legacys, the speedo cable's mechanical movement is translated into a digital signal at the speedometer, which is then sent to the ecu (Talking about on the manual trans cars).

The implication of not running a VSS signal to the ecu on the older legacys is the car will be in a kind of limp mode.

I'm not as familiar with the newer stuff, but I know that in other swaps, people have to get a VSS to the ecu to make it happy. If you're running a standalone, that may be a different story. But my buddy with an eg33 swapped GC running a Hydra, had to go out of his way to get a vss signal to it. I'll ask him what he used.

sorry just re-read this and answered my own question i asked to you. since i need a vss for the ecu im going to have to get the car tuned anyway would i be able to get rid of that issue then or would i still need them?


Profile  Offline
Reply with quote  
 Post subject: Re: speedometer help!!!!!
PostPosted: Thu Jan 05, 2017 4:17 pm 
Fourth Gear
Joined: Mon Aug 31, 2009 9:09 pm
Posts: 1200
Location: Rochester, WA
You absolutely still do need the VSS for the ECU. The ECU uses the VSS table to compute all sorts of fueling and idle control values.

_________________
2005 Legacy GT Limited Wagon 5-Speed. Stock-ish ;)


Profile  Offline
Reply with quote  

Display posts from previous:  Sort by  

Post new topic Reply to topic  [ 14 posts ] 


Who is online

Users browsing this forum: No registered users and 10 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