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Old 06-10-2008, 07:06 PM   #1
txl146
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Default Question: Subaru performance gauge / Omori gauges compatibility?

I currently have SPT performance 3 gauge set up (boost, oil temp, volt) from Subaru and wonder if current wiring / sensor will work with Omori gauges I just purchased with missing sensor/wiring.

Anyone knows?

Thanks!
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Old 06-10-2008, 08:08 PM   #2
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What gauges exactly?
I have one of the older Omori 45mm "full color" mechanical boost gauges in my OEM pod in place of the original 42mm Lamco. It works fine with the same hose from the Lamco, the original restrictor is still in place. The illumination wiring is connected to the original 2-pin connector (this does not plug in to the Omori but I got it to work without any cutting), just had to observe the correct polarity since the lighting is LED.
If you're installing any electrical gauges you won't be able to connect them directly to the factory dimming circuit because the polarity is wrong. Subaru uses a fixed positive/variable negative dimming system, and most if not all gauges have a common ground for the signal and lighting which requires variable positive illumination. I don't think Omori is any different, so for lighting you either have to use the parking light circuit and have fixed brightness, or add a circuit to invert the polarity.
If you're replacing the OEM oil temp gauge with a different one, the existing drain plug/sensor unit may not give accurate readings. You would have to compare its resistance vs. temperature specs with those for the gauge you are installing.
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Old 06-10-2008, 09:39 PM   #3
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Mulder, here is a picture of 3 gauges I just bought from local member. Haven't received it yet.

http://img.photobucket.com/albums/v6...b/DSC02211.jpg
http://img.photobucket.com/albums/v6...b/DSC02210.jpg

I'd love to replace Lamco boost and oil temp gauges with these Omori ones!

Last edited by txl146; 06-10-2008 at 10:38 PM.
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Old 06-10-2008, 09:48 PM   #4
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The boost gauge should be no problem if it's mechanical. If it's electrical you'll have to deal with the illumination as I described. The oil temp is definitely electrical and if you want to ensure its accuracy I'd suggest getting the proper sensor from Omori. I know they also sell the parts to install the sensor in a galley plug.
The EGT gauge will also require a sensor, best to get that from Omori as well.
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Old 06-10-2008, 09:59 PM   #5
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I sent an email to Omori sales and few nasioc.com vendors. Hope they won't charge me a fortune for sensor/wires.
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Old 06-10-2008, 10:06 PM   #6
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Mulder, by looking at the picture, can you tell how big each gauge is? To me it looks more like 52mm gauge.

Do you happen to know if these 3 Omori gauge will fit in place of Subaru performance gauge pack?

Thanks,
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Old 06-10-2008, 10:10 PM   #7
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I can't tell for sure from the pic. They could be 52mm or 45mm. The bezel is definitely not the OEM one and may not fit under the Subaru pod cover.
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Old 06-10-2008, 10:27 PM   #8
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I found EGT probe on ebay; do you think this can work properly with any EGT gauge?

http://cgi.ebay.com/ebaymotors/EGT-T...m290237516231&

Now, I need to find way to get parts to install sensor in the gallery plug.

Looks like you can easily fit Omori 45mm gauge into stock OEM gauge pod:

http://www.j-spectuning.com/installs/45mm_column.pdf

Last edited by txl146; 06-10-2008 at 10:34 PM.
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Old 06-10-2008, 10:44 PM   #9
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You'd have to check with Omori about that probe. I don't know if the gauge is a thermocouple type or thermistor type, and even if it does use a thermocouple the spec could be different.
Yes the 45mm Omori gauges will fit in the OEM steering column pod with some persuasion (it's a tight fit but they do go in), and also they will go in the OEM 3-gauge pod with some Dremeling (this is how I installed my 45mm boost gauge in the pod). However if you aren't sure that the gauges you are getting are in fact 45mm, there is no way to be certain that you can put them in the pod you have.
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Old 06-10-2008, 10:52 PM   #10
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I can get an EGT probe from Omori for $75 plus shipping and oil temp sensor for $55.

Looks like all my gauges are mechanical since gauges are missing a tiny circle as seen on these electrical gauges.

http://www.j-spectuning.com/index.php/cPath/21_24_35_41
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Old 06-10-2008, 11:00 PM   #11
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I don't think Omori made a mechanical oil temp or pressure gauge, and you wouldn't want one anyway.
The EGT gauge has to be electrical.
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Old 06-10-2008, 11:08 PM   #12
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Thanks Mulder. In this picture, boost gauge has a white wire in the rear. Is it missing either power or ground wire? Looks like I need to order a plug/wiring that mates sensor to the gauge for both oil temp and EGT gauges.

http://img.photobucket.com/albums/v6...b/DSC02210.jpg

I do plan to utilize wiring/harness from subaru performance gauge pack as much as possible.
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Old 06-11-2008, 10:59 AM   #13
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....the Turbo meter looks to be mechanical. There appears to be a nipple in the center-rear, below the white wire (this should hook up to the tube leading to the Lamco gauge provided it's the right size). The wire itself is likely for illumination.

As for the other two gauges, the white protrusions (also pictured in the back) are where the wiring harnesses are supposed to plug in (they route to a power source for the illumination, for ground and a divorced sensor). I'm pretty confident that these two are electrical. You will definitely need the Omori harnesses that plug in to these blocks. ...they are proprietary.

The face plate is definitely aftermarket but I recognize it as one that is PnP with the OEM housing. ....if it is the same. Either way the bracket appears OEM and should also work with the stock housing. By looks alone, I don’t think this part will a problem.

.....the gauges appear to be 45mm. I have 52 m in the stock housing and they are slightly oversized requiring a faceplate that protrudes or (in my case) fabrication of my own faceplate and a little cutting of the OEM housing (creating 3 slight arches in the top so the gauges will fit flush with the plate).
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Old 06-11-2008, 11:05 AM   #14
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Quote:
Originally Posted by txl146 View Post
I can get an EGT probe from Omori for $75 plus shipping and oil temp sensor for $55.

Looks like all my gauges are mechanical since gauges are missing a tiny circle as seen on these electrical gauges.

http://www.j-spectuning.com/index.php/cPath/21_24_35_41
.....I forgot to add.... If you are referring to the "tiny cirlce" that is just right of the needles on most of the meters shown on that page, those are warning lights. I believe they were only available in the 52mm and above offerings. IIRC the 45mm elec gauges did not have this option.
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Old 06-12-2008, 12:21 AM   #15
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Thanks for your reply. I am going to be ordering a set of wirings and sensors from j-spectuning (w/o EGT probe); all for around $100.
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Old 06-12-2008, 10:46 AM   #16
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...no problem. I hope the intstall goes smoothly for you.
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Old 06-12-2008, 10:51 AM   #17
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one thing I'm worried about is missing power/ground wires on boost gauge... will keep you posted when I receive 3 gauges soon.
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Old 06-12-2008, 11:14 AM   #18
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...crap. Yeah, check this out:

http://www.j-spectuning.com/installs/wrxmechboost.pdf

Look at the picture on page 5 showing the back of their mechanical boost gauge. .....one white and one black wire.
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Old 06-12-2008, 11:45 AM   #19
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I'd suggest waiting until you actually have the gauges in your hands before you order anything.
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Old 06-12-2008, 11:46 PM   #20
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Unfortunately, I already placed an order and sent payment. I wonder if I can open up the boost gauge and solder black wire? Will keep you guys posted.
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Old 06-17-2008, 05:59 AM   #21
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Quote:
Originally Posted by Mulder View Post
What gauges exactly?
I have one of the older Omori 45mm "full color" mechanical boost gauges in my OEM pod in place of the original 42mm Lamco. It works fine with the same hose from the Lamco, the original restrictor is still in place. The illumination wiring is connected to the original 2-pin connector (this does not plug in to the Omori but I got it to work without any cutting), just had to observe the correct polarity since the lighting is LED.
Mulder,

I just snagged the same gauge, just waiting for it to arrive to do the install.

Where did you put the color control unit?
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Old 06-17-2008, 08:07 AM   #22
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Quote:
Originally Posted by Spenk View Post
Mulder,

I just snagged the same gauge, just waiting for it to arrive to do the install.

Where did you put the color control unit?
Under the pod, behind the gauges. Plenty of room back there.
If you don't have the gauge pack and are putting the gauge in the column mount, you'll have to find another place for it. It might fit under the column cover but don't close everything up until you make the adjustments for color and brightness.
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Old 06-19-2008, 07:04 AM   #23
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Mulder,

Quick folllow-up question:

I'll be installing the same 45mm boost gauge that you have on the steering column, replacing the 42mm Lamco.

Am I correct in understanding that the same two wires used by the Lamco can be used for the Omori? Is it a simple, white-white, black-black connection, or will I need to swap the polarity for the color control unit?

Any other tips you can provide will be greatly appreciated.

Regards,
Spencer
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Old 06-19-2008, 07:09 AM   #24
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I don't recall for sure if the polarity is +white/-black. It should be but I'd check it with a meter to be sure. If you reverse it I doubt you'll blow the LEDs but better safe than sorry.
But yes you can use those two wires directly. The LED's will dim but they don't do so in a linear fashion, in other words the dimming won't track with the other gauges and dimmable lighting. When you set the controls, do so with the dimmer control at the setting you normally use to make sure the boost gauge brightness is balanced with everything else.
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Old 06-19-2008, 07:42 AM   #25
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^^^^Cool, thanks!
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