I replaced the factory ECU (engine Control Unit, or main computer) with an AEM 1311 EMS (Engine Management System). The 1311 is specifically for the 3000GT VR4. The AEM allows for complete control (via your laptop) of all engine systems.

Along with this I included a new AEM wideband O2 system (dual channel UEGO), AEM IAT and MAP sensor (3.5bar). The widebanc O2 allows for better fine tuning than the narrow band factory O2 sensors when in closed loop operations.

The MAP sensor switched me from factory MAF control (Mass Air Flow) to a Speed Density system of fuel/air management. Speed density has advantages one of which is the engine will continue to run if a turbo hose or intercooler line blows.

With the AEM Serial gauges I can choose any one of 19 parameters to display live at the touch of the button. Very handy (see gauge image below or choose Interior Photos for actual pctures of installed serial gauges).

DYNO (Horsepower) - after several hours on the dyno in October I had to halt further tuning above 18psi. The current clutch wouldn't hold past 480HP (AWHP). New clutch (stage II+) and lightweight flywheel install sometime soon and then further tuning above and beyond 18psi!

Below are some of my fuel map images, timing, and calibration settings. Included are the actual calibration files (only usable with AEM Pro Software). These are tuned specifically for my car only.