TurboXS UTEC

From Nissan 350Z & 370Z Wiki

• TurboXS

The TurboXS UTEC is a plug & play engine management system. It's popularity has grown exponentially since release for the 350Z and G35. There is no special software required to program this EMU. All that is needed is a laptop with a serial port or USB port. The UTEC stores up to 5 different maps, and has a "pass-through" map that allows the stock ECU to regain control over the engine when that is wanted. The UTEC has been proven to be very effective tuning both forced induction and naturally aspirated applications.

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.

Software Upgrade

The UTEC will have periodic software updates to further innovate it’s tunability and flexibility. The most current version of software will be available on our website http://www.turboxs.com/.

Pros

• Standalone control over:
  • ignition timing, absolute timing no more +/- guesswork
  • Rev limit control
  • flat shift
  • launch control
• plugs inline with stock ECU
• Software updates will be available through the turboxs.com site that will add more features
• FREE updates and maps from Turbo XS
• Easilly tunable by the user
• No software or special cable needed
• Wide base of US tuners/dealers

Cons

• Piggyback control over the A/F parameters

• List: $1049
• Found For: $850