HOW TO: Zeitronix ZT-2 Gauge Install - Boost and Wideband AFR

[Blak94GSX]

Step by step install guide for the Zeitronix ZT-2 Gauge/Logger system in an EVO X.
Â* Specifically this is on a 2010 MR, although the process is the same for all EVO X models.

The Zeitronix ZT-2 system is comprised of the main controller box, an optional display unit, and various sensors that can be attached to the controller for logging purposes.Â* More information on the Zeitronix ZT-2 gauge/logger system www.zeitronix.com (http://www.zeitronix.com).

Zeitronix instructions for 2010+ models:Â* http://www.zeitronix.com/installation/Zt-2_Model2010_Instructions.pdf
2009 and earlier models:Â* http://www.zeitronix.com/installation/ZT2instructions.pdf


Things you will need:

-zipties
-wire cutters
-wire strippers
-soldering iron/solder/flux (preferred) or solderless connectors
-long screwdriver to push out grommet
-12mm deep-well socket
-long socket extension
-ratchet
-phillipshead screwdriver
-sharp knife for cutting carpet
-flashlight and work lights will make things easier






Remove the glovebox by pinching the sides together and pulling it down until the hinges are free, also remove the side panel by the door and the kickpanel to expose the wiring harnesses behind.

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20001.jpg






The door sill panel just pulls up to loosen the clips, then the kickpanel has two poppet type connectors that you just pull on to pop them out.Â* I circled them so you know where they are approximately to put your force in those locations.Â* There is a plastic nut that sorta pushes/screws on to hold the corner of the kickpanel against the carpet.


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%2002.jpg





Drop the lower panel that is under the fan assembly to give better access to everything to work on it.Â* There are 2 pop-in fasteners that you have to push out first, then the rear of the panel just slides out from holes that the rear tabs sit in. The pop-in fasteners are highlighted here:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20006.jpg





The hole that goes through the firewall is behind the Sirius receiver if you have one on your model.Â* There are 2 12mm nuts that hold the mounting bracket to the firewall, use a long socket extension and a deep-well 12mm socket to remove the nuts and then the receiver will drop down after you unplug it:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20003.jpg







Depending on the model, you may or may not have sound deadening material covering the hole through the firewall.Â* If you do you will have to cut out a section to get to the hole.Â* Use a sharp utility knife to slice 2 sides of the carpet flap.Â* You don't need to remove the carpet completely, just slice it enough so it can fold down out of the way enough to push cables through.Â* I highlighted the section that you need to cut out.Â* Note the arrow that is stamped into the carpet for reference of the location:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20022.jpg





After clearing out the working area inside the car, go to the engine bay and look in the back passenger side corner behind the shock tower and you will find a black rubber grommet.Â* Use a long screwdriver or something to push it through into the inside of the car.Â* I found it easier to push it in than to pull it out on the engine bay side, but either will work:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20021.jpg


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20025.jpg





Push the cables through from the engine bay side towards the inside of the car, which will then look like this inside.Â* Don't worry about the cable length at this point, leave lots of it in the engine bay until the sensors are installed:


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20027.jpg

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20026.jpg




Install the boost sensor.Â* T into the BOV hose and connect it to the boost sensor and plug the wiring harness into the sensor.Â* Then ziptie it to the large wiring bundle on the firewall, or wherever you prefer:


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20030.jpg




Ziptie locations for Boost Sensor cable routing highlighted:


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20029.jpg





Screw in the wideband sensor into the bung that is attached to your downpipe or wherever the bung was installed for it.Â* You can also use the stock cat location and replace the rear O2 sensor.Â* Run the wires up along the firewall and ziptie up out of the way.Â* Try to get the cables as far away from the hot turbo as possible.Â* From inside the car, pull through all the slack so the extra cable is inside the car, not the engine bay.


Stock rear O2 sensor secured to bracket with band clamp:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20rear%20o2%20mount.jpg





Zeitronix Wideband sensor installed in stock rear O2 bung, showing cable routing and ziptie locations:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20wideband%20cable%20routing1. jpg


Â*
Route wideband cable forward along the crossmember and then run the cable up along the power steering lines towards the hole in the firewall.

The wideband connector is highlighted in yellow, with the blue line showing how the cable is run, and the red circles highlight the ziptie locations:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20wideband%20cable%20routing2. jpg

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20wideband%20cable%20routing3. jpg





Back inside the car, behind where the kickpanel was, find the thickest red wire, which is powered on only when the key is in the ON position.Â* Tap into it for power for the Zeitronix system.Â* Ideally you strip a little insulation off but do not cut the wire, then wrap the zeitronix red wire around the power wire and solder it all together.Â* Wrap neatly with electrical tape afterwards.Â* You can also use a crimp type connector or vampire taps:

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20031.jpg




There is a ground location down by the carpet on the floor where 2 wires are already going for ground.Â* Connect the Zeitronix black wire (ground) there.Â* You should at this point have both the red and black wires hooked up (power and ground).Â* The boost sensor will connect to the brown, yellow, and orange wires on the ZT2 harness.Â* Solder these together or use some kind of quick-disconnect.Â* I used a 3 wire trailer hitch quick disconnect from Autozone.Â* Also plug the wideband into the ZT2 controller and the display/logger connection.Â*

If you purchased an Exhaust Gas Temperature probe, that can be plugged in at this point to the controller.

There are several other inputs on the ZT2:
- The Blue wire can be used for Coolant Temp, Oil temp, oil pressure, fuel pressure, etc.Â* Refer to the documentation for more information.
-The Gray wire can be run to the ECU for the Throttle position, and the Green wire goes to the ECU for RPM.Â* ECU pinout diagram is here: http://roadraceengineering.com/evox/tech/evox-ecuwiring.htm
-If you are going to be using the Zeitronix logger software, having the RPM and TPS hooked up is very useful.

Ziptie the controller to the metal bracket, and tidy up the wires.
Looks something like this when you are all done:


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20036.jpg




There are several types of displays offered for the ZT2 system, here are the two most common styles (square LCD multi-display, and the round LED multi-display).Â* You can mount them wherever you like.Â* I think they fit nicely just under the radio and you can pull up on the dash trim and stuff the wire under there as shown by the red highlight:


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20040.jpg

http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20041.jpg





Reinstall the Sirius receiver if you removed one, and you can start putting the panels back on:


http://www.blak94gsx.com/pics/evoxzt2install/zeitronix%20install%20038.jpg






If you did everything successfully, the display will power on when you turn the key to the ON position, and you will be able to read boost and wideband.Â* Refer to the ZT2 instructions for operation and datalogging information...

Fully installed, showing the wire routing:

http://www.blak94gsx.com/pics/evoxzt2install/Zeitronix%20Install%20finished.jpg

http://www.blak94gsx.com/pics/evoxzt2install/Zeitronix%20Install%20finished2.jpg






Video showing the Zeitronix round LED Multi-display installed:

http://www.youtube.com/watch?v=Zby-M1hEpo8

[pensport]

nice write up gray!

[estribo714]

Can i get a picture of the final install with gauge mounted?

[SleeperEvoX]

I just bought my zt2 at mod2011 got a great deal on it paying cash. Anyways I plan on running senors in parallel as I will be monitoring both boost and fuel pressure, wideband, and tranny oil temp as I have the SST. Any thoughts on connecting the ZT-2 head unit to the OBD2 port for additional data logging info. I spoke with Ziggy I think his name was and he said that you could do that... Also they recommended adding a bung for the wideband sensor and running the system stand alone. O0
Let me know how its working for you as I am waiting to install mine when I start my mods...

[Zeitronix]

Zeitronix DashDAQ display takes both inputs the Zt-2 and OBDII. You can combine best of both worlds. You can also connect two Zt-2s, two Zt-3s or Zt-2 + Zt-3 combo for multiple AFR logging plus you can expand number of sensors

[estribo714]

Very nice. Can't wait to get mine install

[Blak94GSX]

The Zeitronix system is very powerful when you start running additional sensors and chaining them all together for logging.Â* I only covered the basic install process for the core unit and most common sensors.

My favorite part about the Zeitronix ZT-2 system is that you get the most important things in one integrated display (Boost, EGT and Air/Fuel Ratio), and if you have EVOScan you can log the wideband AFR through that along with the rest of the OBD/Mode23 data.Â* Â*Then in EVOScan when you graph the data log, you get to see boost, wideband AFR, EGT all together with RPM, TPS, timing, knocksum, etc.

I suppose I will make a How-To for using the Zeitronix ZT-2 along with EVOScan...

[Zeitronix]

The 2010 Zt-2 also reads and logs USER2 input which can be assigned to any of those:
Fuel Pressure, Oil Pressure, Coolant Temperature. Oil Temperature and Air Intake Temperature.

2010 Zt-2 and LCD and ZR-2 round gauge shows USER 2 value on the LCD and gauge. LCD LAMBDA or AFR can be assign to show USER2 input and renamed.


http://www.zeitronix.com/images/LCD/x454/LCD.Black.FuelP.png


Any value can be set as an audible and visual warning. For example, warn me if Coolant Temperature is grated than 110C, or Fuel Pressure lower than 40 PSI. You can also set complex warnings. For example: Fuel pressure lower than 60 PSI when boost is above 20 PSI.

[Skiracer]

Nice writeup. When are you coming over to install it on my car?

[Blak94GSX]

Your Audi land yacht?

[dkorr]

I'm curious if this is the correct wiring setup.