Innovate Motorsports MTX-D, EGT Gauge - Manual (Page 3)

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1 Mounting and Sensor Installation
1.1 Mounting the Gauge
The MTX EGT gauge fits in a standard 2-1/16” (52mm) hole. The gauge can be mounted into a
commercially available 2-1/16” (52mm) gauge pod or by drilling a 2-1/16” (52mm) diameter hole
to your desired mounting location. Check behind he mounting location for any wiring or
components before drilling. Allow at least 2-1/4” (57mm) of depth for the gauge body and
associated wiring. Mounting of the gauge should be done in such a manner that the cables are
not being forcefully pulled from the gauge body itself.
The MTX EGT gauge is splash resistant (not water proof) and can be mounted so that it is
exposed to the elements. The MTX gauge should not be submerged and special consideration
should be taken to protect the gauge from direct water spray (water coming from a pressurized
source.) When replacing the bezel and/or gauge face verify that the o-ring is properly seated.
Make sure the mounting location does not impair visibility or interfere with driving.
1.2 EGT probe
1. Select the header tube in which you wish to mount the probe.
2. Locate the sensor location point on the pipe.
3. Once the spot is located, drill a .313” (5/16”) inch diameter hole in the header pipe.
4. Remove the plastic protector from the probe.
5. Center the weld-in bung over the hole and weld it to the header pipe a full 360 degrees.
TIG welding is best.
6. Installation the compression cap and ferrule on the welded base and bring it up to finger
tight.
7. Now measure the distance from the tip, up the hot leg of the sensor that is equal to the
height of the compression fitting plus the desired immersion depth that the sensor will
extend into the exhaust stream. Mark that length using a marker or pen on the sensor
sheath.
8. Insert the sensor probe through the installed mounting hardware until the mark touches
the top of the cap and tighten compression nut using a 9/16” open-end wrench. Make
sure sensor transition and spring is at a 90-degree angle to the exhaust pipe, if room
permits. This will position the sender tip correctly in the exhaust stream.
Lead Wire Installation: DO NOT HARNESS THE LEAD WIRE TIGHTLY ! Make long
sweeping bends and loosely guide the lead-wire to the instrument using the harness ties
provided. This will allow the wire to absorb the engine vibration along the wires length.
Prevent the wire from touching the exhaust pipe when the hood is in the down position.
The warranty does not cover burnt lead wires or wires that are smashed or twisted off.