Control Your 4L60E or 4L80E
The new breed in automatic transmissions are controlled by ECU control units. TCI's newest offering is a Transmission Control Unit (TCU) designed specifically to allow the user maximum control and tuning of it's T-Com software. You have the choice of line pressures, shift timing and firmness of shift for both upshift and downshift points. A feature exclusive to T-Com is the ability to have part throttle shifts as a function of road speed while the Wide Open Throttle shifts can be a function of engine rpm. Tuning is quick and simple.

TCU SYSTEMS INCLUDE: · Transmission Controller Unit in shock-resistant and waterproof case · Complete wiring harness with labled connectors · T-Com PC software, instructions and 5 ft. communication cable for TCU to laptop

Initial calibration only requires answering a few quick questions in the calibration program. Tire size and gear ratio are plugged in to assure proper speed data. The installer also answers whether the unit is a 4L60E or a 4L80E and the unit is ready to go. Additional calibration is only required if the user wishes to customize the shift characteristics to suit their wishes. Comes with complete instruction sheets and wiring diagram.