The Z UTEC is a Plug and Play Parallel Engine Management System. Designed to work together with your factory ECU.

The front UTEC Ports from left to right. The RJ-12 Adapter allows for Serial Port connectivity with the use of our adapter. The large connector in the middle is where you will connect the factory ECU. This is part of our plug and play installation, zero hardwiring is needed. Located on the far right is the UTEC On-board map selector. This used to switch between the 5 map locations, valet and security mode.

The rear UTEC Ports from left to right. The first port is the UTEC 9v power input. This is used to power the UTEC outside of the vehicle. The second input is the optional Map Sensor input. This is used when running a vehicle in Speed Density Mode. The optional map sensor has the ability to read up to 70 psi. The third input is to use a USB adapter to connect. The fourth is yet another form of connection to the UTEC, DB9 Serial port. The last port is to connect our Remote Map Selector. This allows you to remotely switch between the maps.

In basic form we allow control over Fuel and Ignition Timing. Each control gives you 250 rpm resolution from 500 rpm to rev-limit with over 10 different load sites.

The UTEC will ship with pre-programmed base maps to help get you up and driving right away. In addition to having a pre-programmed base maps the UTEC has provisions for 5 different map locations. The multi-map capability allows you to use our remote map selector to switch between the 5 maps or stock mode on the fly. Your tuning options are endless when you can have a race map and daily driving map at the tip of your fingers. The power is all yours!

The easiest way to visualize it would be to break down it’s components into separate systems.

Fuel Control- The UTEC has two fuel control modes. Each of them have a fuel map that allows the fuel to be adjusted at each of the 250 rpm resolution with over 10 different load sites from zero to rev-limit.

MAF Pull Up/Down- allows you to intercept the MAF signal and add or subtract up to +/- 50% of the signal. This form of fuel control works best for mild naturally aspirated modifications.

Speed Density Fuelling – allows you to use your MAF for low load cruising situations. Under heavier load the UTEC will employ Speed Density Fuelling. The fuel map will allow you to enter Injector Pulse-width X10 into the table. This allows for precise fuel control. In the map you are now specifying millisecond on times of your injectors. This mode is a necessity for Forced Induction vehicles. The UTEC Map sensor is required.

Ignition Timing- The UTEC gives you complete control of timing. This is not done on the basis of offsets or altering the crank signal as some engine management systems use. The load reference we use is RPM vs. MAF or MAP which is optional. This allows the fuel map to be adjusted at each of the 250 rpm resolution with over 10 different load sites from zero to rev limit. When you enter a value into the Ignition Map you are actually typing in Degrees Before Top Dead Center. The UTEC fires the coils based on these values. No more wondering if the stock ecu is going to advance or retard timing.

Knock Control- This feature allows you to help keep your motor in one piece. The UTEC contains default knock thresholds but can be adjusted at 1000 rpm increments up to 9000 rpm. It also contains a Knock Count threshold that allows you to define how many counts of knock before the UTEC will respond with a Knock Retard Step. The Knock Retard Step is the amount of ignition timing that will be pulled per knock count to a defined Knock Maximum Retard. Knock Maximum Retard relates to the maximum degrees of timing the UTEC will retard per knock event. When a knock count is registered the UTEC will hold the retard for a set number of crank cycles this is called Knock Retard Duration. The UTEC also has the ability to apply a global Knock Correction to the entire map once a knock event is evident. This will help ensure that you keep your high compression monster together. All of these features are the UTEC’s safety net. They should be used pro-active not as a reactive measure.

Datalogging- The UTEC Datalogging function helps you to keep an eye on your engines vitals. Using the logger gives you all the information you want to know about your vehicle. You can take multiple logs of your vehicle whether it’s simple driveability or all out racing. You can be sure the UTEC is keeping an eye out when you can’t. The main logger (Number1) contains rpm, map, maf voltage, tps, load site, afr, ignition timing, injector duty cycle, modified fuel (fuel control) and more. Logs can be output into text files or csv files for easy comparison. When the UTEC is used with a TXS Tuner model it can also supply you with w/b afr readings in your logs as well. Giving you the ultimate tuning package.

Injector Scaling- Allows you to scale larger than stock injectors making coarse adjustment to your fuel map.

Remote Map Selector- The remote selector gives you the capability to switch between your UTEC maps. It also allows you to revert back to full stock ecu control on map 0 (when stock sized injectors are used). Maps 1 through 5 are your UTEC tunable map locations. Map 7 is your security mode, the car will not start. The car cannot be bump started or jumped when security mode is enabled.

Rev-Limit Control- This feature allows you to adjust your primary rev-limit on your 2003-2004 350Z.

Programmable Shift Light- The shift light function lets you set the 3 RPM points at which to turn on a the optional three color shift light.

Spare Solenoid Drivers- Allow you to activate devices in a 3D map like Water Injection, Nitrous, Water Sprayer etc.