Holley EFI Terminator X-Max Transmission Controller - 4L80 / 4L90 34001-41251-R Includes 1-3/4" x

Includes 1-3/4" x

Popular in Top Alcohol and Pro Mod classes

Up to 100 lb

crank gears for full steel timing gear sets and oil pump drive gears

Holley EFI Terminator X-Max Transmission Controller - 4L80 / 4L90 34001-41251-R Includes 1-3/4" xAdd GM 6L80 90E transmission control to any existing vehicle utilizing a Terminator X Max ECU. A departure from traditional Holley EFI transmission control, the Terminator X Max ECU allows the ability to use 2007+ GM 6L80E and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied Holley EFI OBDII Transmission Tuning Handheld is used to adjust Shift Points, Tire Size and Gear Ratio. The