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Old 01-23-2005, 11:27 AM   #1
CFar
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Default Defi D-guage EGT install

Hello all, Ive done a bunch of searching and have more questions now then I did when I stareted.

I'm going to go with a Defi EGT D guage. The one that doesn't require the daisy chain as Defi calls it.

Anyway, in searching I found a good resource on how to tap the manifold, but...

1. Does anyone have experience with what size bits and taps Ill need on this particular guages bung/probe?

Im thinking about putting the guage in the cup holder by the armrest for the time being...
2. Will this guage work 90deg from its intended axis?
3. What wires am I going to tap in the car to get the power to the guage (location and color, I dont have a volt meter)?

I may end up going and putting the guage on the A-pillar...
4. What wires am I going to need to tap to do that?
5. Where do I run the wires if I do that?

Your help is MUCH appreciated if you can send it this way,
Chris
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Old 01-23-2005, 04:55 PM   #2
CFar
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ttt anyone?
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Old 01-23-2005, 08:09 PM   #3
mcowger
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1) Not sure
2) It should be fine.
3) Any old switched power source should be fine. A vampire/T-tap into the clock power wire or the cigarette lighter power will be fine.
4) Same ones - just look for a nearby 12V switched source. For the A pillar, the nearest might be one from the cabin fusebox that controls the interior lights or something.
5) Gotta run them under the a pillar down to the fuse box.
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Old 01-23-2005, 09:48 PM   #4
CFar
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1. Electrics arent my forte, Im assuming a vampire/t-tap is just a little clip that goes over a particular wire and steals some juice instead of needing to spllice (crimps or sodder)?

2. Does the WRX cigarette lighter only work when the car is on?

Your response is appreciated,
Chris
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Old 01-24-2005, 10:52 AM   #5
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Anyones please?
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Old 01-24-2005, 12:47 PM   #6
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I just installed mine.My header already had the bung in place and threaded, but the bung was a different size thread of the probe wire itself. I got a friend to make one at his shop. probably would have cost me $ 20 or so to buy.The guage should work just fine in the cupholder but just won't look right as far as fit.If you have an '04 and added a radio, use the power wires there. You can also use the other locations noted in other posts here.If no radio is in place, you can also contact the dealer for the wiring colors.Using the A-pillar, I would go ahead and use extra wire and go to the radio for the power. The factory boost guage also hooks up in this area. Just be sure of all of your connections. The wire on the guage is small. My guage was defective and is being replaced at this time. Luckily I only had to pull out the guage to send off for repair.
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Old 01-24-2005, 03:10 PM   #7
CFar
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Ok, Ill see what I can figure out when I get under there. I think this is going to be a two day affair. One for the inside and putting the guage in and one for putting probe in. Time sake...

Im keeping it in the cupholder because right now all I need to know is if my car is running lean or not. Ill make it look pretty a bit later Subiegal has a nice looking pod that I have my eyes on.
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Old 01-25-2005, 03:42 PM   #8
YourMother'sLover
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Does anyone have a picture of where to tap into the manifold...I've been holding off on installing my EGT gage because i don't want to tap into it. i would like to see a pic in case I change my mind and put it under the knife (or tap).

Thanks,
YM'sL <-----It's not for me, the banana wants to know.
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Old 01-25-2005, 04:08 PM   #9
TurbojonLS
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There's a flat spot on the Exhaust Manifold. Its about the size of a dime, maybe a little smaller. This is the "Casting Button" that everyone refers to when discussing egt installations. Once you get the heat shield off it almost hits you in the face its so obvious. Most people do the Driver's side.
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Old 01-26-2005, 08:32 PM   #10
darksands
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I think that most people do the driver side cause its the most convienient. Those are for Cylinders 2 and 4. The passenger side is 1 and 3. It just depends on where you want it. I hear that Cyl 3 runs the leanest so many people go through the hassle to pit it in that one. IIRC, it really doesnt matter but I, personally would put it in the passenger side.
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