Holley Sniper EFI - Sniper 2 Transmission Control Kit 551-103
Type: Transmission Controller
The Sniper Transmission Controller (STC) is designed for common Ford and GM electronic 4 speed transmissions. This covers a complete range of applications, for all Sniper EFI systems, Sniper 2 EFI specific (M8 CAN connection), or a full standalone unit. The Sniper specific applications connect to your Sniper EFI system via CAN bus and is programmed through the existing Sniper 3.5-inch touchscreen (not included). No programming is available with PC computer software, however the transmission functions can be data logged and reviewed with Sniper PC software. The Standalone version is primarily intended for carbureted engine combinations. Ford and GM 4 speed electronic overdrive transmissions have the top gear being an overdrive and all have a lockup torque converter that eliminates any slippage when the lockup is applied. With a stock torque converter the lockup should only be applied under light throttle conditions or excessive wear will occur. Upshifts, downshifts, and torque converter lockup are based on vehicle speed and throttle position (or optionally the MAP sensor) and are adjustable with the 3.5-inch touchscreen (not included).
Features:
- Adds electronic transmission control functionality to a Sniper 2
- Tuning is performed through an LCD touchscreen (not included)
- Tune upshifts, downshifts and wide open throttle (WOT) shift points
- Full programmability of torque converter lockup
- Full tuning of transmission line pressure (shift firmness)
- Controls and layouts interface mirror Dominator and Terminator X Max ECU's (except no paddle shift)
- Controls conventional electronic 4 speed transmission applications. Ford AODE and 4R70W and GM 4L60/70/80E transmission specific harnesses sold separately
- 558-405 - GM 4L60/70/80E
- 558-455 - 2009+ GM 4L60E
- 558-470 - 1998+ Ford 4R70W/4R75W
- 558-471 - 1992-1997 Ford AODE/4R70W
Specs:
- Application: Sniper 2
- Brand: Holley Sniper EFI
- Category: Transmission
- Emission Code: 5
- Grade Type: Performance
- Housing Material: Polymer
- Make: GM and Ford
- Part Type: Automatic Transmission Control Module
- Product Type: Transmission Controller
- Removable PROM: No
- Sub Category: Control Modules
Tech Resources:
MAP sensor is needed if using MAP for line pressure, which is usually only done with forced induction applications.
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Important Notices
- Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
