((full)) Download Tunercat May 2026

For older GM vehicles (pre-1996), including support for EPROM-based systems.

A real-time tuning version that allows for "on-the-fly" adjustments when connected to emulators like the Moates Ostrich or Roadrunner.

TunerCat is designed for Windows 32-bit and 64-bit operating systems, including Windows XP through Windows 11. Software Downloads - TunerCat download tunercat

TunerCat is a comprehensive Windows-based utility designed for custom tuning GM (General Motors) vehicles, ranging from older OBDI light trucks and performance cars to modern OBDII models. It allows users to modify critical engine and transmission control parameters—such as fuel mapping, spark advance, and shift points—through an intuitive interface that uses standard engineering units instead of complex binary or hex code.

Designed for modern GM vehicles using OBDII protocols. For older GM vehicles (pre-1996), including support for

A dedicated program for reading and programming FLASH memory in 1994-1995 OBDI and various OBDII PCMs.

A diagnostic and data-logging tool that works alongside the tuning software. Installation and System Requirements Software Downloads - TunerCat TunerCat is a comprehensive

The primary source for all official TunerCat software is the TunerCat Downloads Page . On this page, you can find various versions of the software tailored to different vehicle generations: