Fully programmable plug-in replacement for 36 pin Delphi controller with J1850 data bus. Quickly auto-tune fuel curves for front and rear cylinders on a dyno or on-road with new WEGO IIID dual channel wide-band oxygen sensor interface. Robust alpha-N (throttle position and RPM based) fuel control eliminates problems with long duration/high overlap camshafts. Extended data logging and diagnostics. DataFLASH memory stores full 60 minutes of operating data at 10 samples/second. Powerful Windows software for custom programming and data analysis. Programmable user input for functions (not available in TCFI EX version). Programmable user output for functions (not available in TCFI EX version). Billet aluminum housing with black anodized finish. Support for new 6th gear indicator on 07-13 models. Easy plug-in installation Supports all sensors including theft/security module. Not legal for use in California on pollution controlled vehicles - Check local laws before installing.