These are the tools you will need to complete the installation of the exhaust probe: drill, sharp high quality drill bits, NPT tap, safety glasses, and anti-sieze compound. I used a marker to outline where I wanted the hole to make sure there were no obstructions. I chose to drill and tap the exhaust manifold, also known as pre-turbo, so I could get the exhaust temp reading as it comes out of the combustion chamber. This is the most accurate location to read your exhaust temperatures.

I removed the inner fender well on the passenger side of the truck for access. Once removed, I drilled the manifold with the engine running so any chips or flakes of metal would be blown out instead of staying in the manifold and going through the turbo charger. I drilled the hole in three stages finally ending up with a 7/16" drill bit. the tap size I used was a 1/4" NPT, to tap the threads in the manifold. Wearing goggles or safety glasses is a must to protect your eyes from the flying metal flakes. I also used a pair of leather work gloves to protect my hands from the heat of the exhaust while I was tapping the manifold.

Once the manifold was drilled and tapped, I shut off the engine and installed the coupler. I used a liberal amount of anti-seize on the threads before installing it and snugged it into the manifold. NPT uses a taper in it's threads to make the seal, so this doesn't need to be gorrilla tight. The metal is soft, so you need to be careful not to strip the threads you just created. The probe uses a brass 1/4" compression washer and threaded nut to seal to the coupler. Again just snug here as you will break the compression fitting if you over tighten and will have to get another.

Here is the finished product of the install. I have placed the thermo wire in split loom to make it look like a factory install. I have given enough slack in the line to allow for engine movement so as not to put stress on anything. Once the work under the hood was done, then the job of mounting the gauge in the cab could begin.

I decided to do a custom mount, and install my EGT gauge in the small cubby hole to the right of the HVAC controls. To do this, I took the front dash cover off to have access to the cubby hole and poped it out. I could not find just a 2" gauge mounting braket, so I purchased an oil pressure gauge kit to obtain one. If nothing else, having a mechanical oil pressure gauge on hand can be rather handy. Now that I had the mounting bracket, I trimmed away some of the metal on the bracket so it would fit the contors and size of the cubby and through bolted it.

I then drilled a 2" hole into a sheet of plexiglass for the gauge to fit in. With the gauge in the plexiglass I fit the assembly into the mounting bracket in the cubby so I could get an outline drawn to trim the plexiglass. I also had to cut the back of the cubby hole off so I could have access to the thumb screws as well as wiring. Once everything was trimmed to fit, it was ready for paint. I used bumper black as it seemed to give the closest match to the surrounding dash color and texture.

With the paint dry, I slid the gauge into the faceplate, and used the thumb screws to pull the gauge and the faceplate snug against the front edge of the cubby hole. I then ran all the wiring and poped the gauge assembly back into place.

Here is the picture of the finished product