The Sniper 1 Transmission Control Kit (STC) adds electronic control of common Ford and GM electronic four-speed transmissions to a Sniper 1 EFI system. It connects via CAN bus and is programmed through the existing Sniper 3.5" touchscreen (sold separately); transmission functions can also be data-logged and reviewed using Sniper PC software.
Specifications:
- Application: Sniper 1
- Part Type: Automatic Transmission Control Module
- Part Number: 551-101
Requires a Sniper Version 2 ECU and up-to-date handheld firmware (handheld sold separately). A MAP sensor is needed if using MAP for line pressure, common on forced-induction applications. This kit is intended for Sniper throttle body systems only and is not compatible with 4WD installations; harnesses for controlling electronic 4-speed transmissions are sold separately.
FAQ
What transmissions does the Sniper 1 Transmission Control Kit support?
It supports common Ford and GM electronic four-speed automatic transmissions.
Does this kit include a handheld display?
No, the handheld touchscreen used for programming is sold separately and must be running up-to-date firmware.
Can this be used with a 4WD vehicle?
No, this product is not compatible with 4WD installations.
What can be tuned with this transmission controller?
Upshift and downshift points, wide-open-throttle shift points, torque converter lockup, and transmission line pressure (shift firmness) are all fully programmable.

