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| Defi Boost Gauge, Link Unit, and ATI E-Pod Install |
| So the Evo runs alot of boost stock. How much? Well it's supposed to be 19psi. The only way to tell for sure is to install a boost gauge. Since this car is going to see some big power gains, lots of dyno time, and hopefully some motorsports events; I wanted to make sure that I had an accurate way to tell what's going on. Enter Defi's link-system of gauges. It's fully expandable, and hold 3 minutes of playback memory, has peak hold and warning, and all the bells and whistles. It's pricey, but you get what you pay for. As an added bonus, once you wire the link unit and install a gauge, all you have to do to add on is run the sender to the link unit, and plug the gauge into another gauge; no more wiring. It's that simple. |
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| Step 1: Wire the Link Unit: The first step is to install the link unit. It fits perfectly in the space between the center console and the lower dash, below the storage pouch. Wiring is very straightforward, remove the upper dash (pull the climate control knobs off and undo the screws); pull out the radio, tap the 12v switched (blue/yellow) wire to the orange wire and the white wire. You want the illumination wire (white) hooked to a 12v switched source b/c the BF gauges are not visible unless they are illuminated. For ground, just hook the black Defi wire to one of the many bolts inside the dash. The battery wire is next to the 12v switched wire in the radio harness and is red w/ a black stripe. tap these, run the wire to where the link is, and put the radio back in. Use pliers on the tap-in connectors to make sure they connect. This leaves you with what you see above. |
Step 2: Hook up the Sender: Next, pop the hood on your Evo and look along the firewall for bolt shown in the image to the right numbered "1". Undo the bolt (10mm), attach the included vacuum line to the Defi sender, and bolt the Defi sender to the firewall, reinstalling the bolt.
Now, find the line going from the intake manifold to the fuel pressue regulator (number '2' in the picture to the right). Cut the line, install the supplied Defi T-fitting, and cut the vacuum line off of the sender to the proper length. You should now have the T-fitting between the intake manifold and fuel pressure regulator, with the 3rd nipple going to the defi sender. |
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Finally, find the rubber grommet on the firewall shown in the image to the left, numbered '3'. Punch a hole into the grommet, run the sender plug through it, reinstall the grommet, and route the wire behind the dashboard to the link unit. |
| Step 3: Mount and Connect the Gauge: You can breathe easy, we're almost done. Lower your tilt steering column, and remove the plastic top cover by taking out the 1 long phillips head screw in the deep hole underneath, and the two short screws underneath the column, by the tilt lever. Pry the top piece off carefully (I used a plastic putty knife), and remove it. Since I am only putting 1 gauge on this time, I removed one of the cups from the ATI pod -- the right cup is less obstructive, so I decided to use that one first. You will have a hole in the steering column top from the other cup, but hey, take it ease, who cares? |
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Now take the long gauge wire that came with the link unit, and run it from the top of the column, behind the dash, and down into the link unit. Leave enough slack to move the tilt wheel around, and connect the gauge. Now, put your dash back together and use zip ties to remove any slack in the wiring. Install the gauge cup into the ATI pod, put the gauge in the cup with the rubber sleeve, plug it in, and you're in business.
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