Holley EFI TERMINATOR X MAX [24X | MULTEC | TRANSMISSION CONTROL | 3.5] (GM 4.8L, 5.3L & 6.0L VORTEC + 4L60E & 4L80E) : COLORADOSPEED - DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PCM | ECM