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Sniper Standalone Transmission Controller
Quick Start Manual
551-102
NOTE: This manual is a "quick start" manual. For a comprehensive manual go to
www.holley.com
and download the full manual for
part number 555-102. This manual is intended to complete installation and load a base calibration.
OVERVIEW
The Sniper Transmission Controller (STC) allows the use of common GM and Ford electronic four speed transmissions. Part Number
551-102 is a stand-alone controller and is intended to work with carbureted or EFI applications that don't support electronic
transmission control. You will need a throttle position sensor if one is not already installed. The included 3.5" touch screen is used to
perform all the allowable adjustments (shift speed, torque converter lockup, etc.) No programming is available with PC computer
software, however the transmission functions can be data-logged and reviewed with Sniper EFI PC software.
KIT CONTENTS/ADDITIONAL PARTS REQUIRED
This kit contains the Sniper Transmission Control Module, 3.5" Touchscreen handheld tuner, and power/sensor harness.
The user must purchase a transmission harness separately that fits their specific transmission. These harnesses are as follows
(note that these are the same harnesses used for Holley Dominator and Terminator X Max ECUs):
558-405 – GM 4L60/70/80E
558-455 – 2009+ GM 4L60E*
558-470 – 1998+ Ford 4R70W/4R75W
558-471 – 1992-1997 Ford AODE/4R70W
* The "2009+" 4L60E specifically applies to OEM/factory original applications. When dealing with a GM Performance Parts, reman, or
unknown year transmission the transmission connector should be checked per the image below. If pin "F" (Circled in Figure 1 below)
IS PRESENT, you need the 558-455 harness. If it is NOT present you need the 558-405 harness. Go by THIS PIN ONLY as the other
pins may vary transmission to transmission. Be sure you compare your connector to the image below by "clocking" the pins based on
the connector slot.
Figure 1
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Table of Contents
Related Manuals for Holley 551-102
Summary of Contents for Holley 551-102
- Page 1 The Sniper Transmission Controller (STC) allows the use of common GM and Ford electronic four speed transmissions. Part Number 551-102 is a stand-alone controller and is intended to work with carbureted or EFI applications that don’t support electronic transmission control. You will need a throttle position sensor if one is not already installed. The included 3.5” touch screen is used to perform all the allowable adjustments (shift speed, torque converter lockup, etc.) No programming is available with PC computer...
- Page 2 Install the (purchased separately) transmission harness. Connected it into the 26 pin (smaller) connector on the STC unit. Instructions for the specific transmission harness can be found at Holley.com under the transmission harness part number. They typically have a power connection to the battery and are plug-and-play to the transmission.
- Page 3 Black Wire – Sensor Ground Green – TPS Signal MAP – The MAP sensor connector is for the common GM 1 Bar MAP. (Holley PN 538-24). The pinout is as follows: Orange Wire – 5 Volt Reference Black Wire – Sensor Ground Red/Black –...
- Page 4 Select the “Wizards” icon. Select the “STC Wizard” icon (Figure 3). Figure 3 Select Transmission Type (Figure 4) - Note: The 1.63 ratio is by far the most common 4L60E version. Figure 4 Select Ignition Type – See the WIRING section above. If you connected the WHITE wire, select “Coil (-)”, if you connected the purple wire, select “CD Box”.
- Page 5 Enter Tire Diameter (Figure 5) – Enter Height/Diameter for rear tire in inches. Figure 5 Enter Rear Gear Ratio (Figure 6). Figure 6 The next entry is “Automatically Scale Shift Tables” (Figure 7). It is advised to select “Yes” to this. This will rescale all of the up/down shift tables for the user’s specific tire diameter and rear gear ratio (compared to the base calibration values of a 4.10 gear and 27.7”...
- Page 6 Holley Performance Products Toll Free Technical Service: 1-866-464-6553 Technical Service: 1-270-781-9741 For online help, please refer to the Technical Information section of our website: www.holley.com © 2023 Holley Performance Products, Inc. All rights reserved. Tous Droits Réservés. 199R12495 Revision Date: 9-26-23...
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