GM Gen IV / downloadable cam tunes

2007–2013 Gen IV Texas Speed Chopacabra downloadable tune files

Hear the Chopacabra cam in a 5.3L Gen IV setup with stock exhaust. Then find the downloadable .HPT file for your vehicle, year and engine.

HP Tuners .HPT files READ FIRST PDF included Match your vehicle and engine

Gen IV Chopacabra · 5.3L with stock exhaust

Hear a 5.3L Gen IV Chopacabra setup with stock exhaust. This video is one example; sound and results vary with the engine, installed parts and exhaust. Review the selected file’s details against your own setup.

Your vehicle. Your engine. Your file.

Choose your Gen IV download.

Looking for another generation?

Find available 2007–2013 listings for Silverado, Sierra, Tahoe, Suburban, Yukon and Yukon XL. Open a vehicle or filter the directory for its listed 5.3L, 6.0L and 6.2L options.

Chevrolet Silverado2007–2013 · 19 file listings
GMC Sierra2007–2013 · 21 file listings
Chevrolet Tahoe2007–2013 · 9 file listings
Chevrolet Suburban2007–2013 · 14 file listings
GMC Yukon2007–2013 · 14 file listings
GMC Yukon XL2007–2013 · 21 file listings

Check the file's controller and operating system against your vehicle's original read. Review the product details and installed hardware before choosing a file.

02 / KNOW WHAT YOU’RE GETTING

A file with a clear
next step.

The selected .HPT file comes with the JRJ READ FIRST guide and tutorial. See the guide before you buy.

  1. 01

    Keep your original read.

    Your vehicle’s stock file stays the starting point.

  2. 02

    Compare the selected file.

    Follow the guide to review differences in VCM Editor.

  3. 03

    Review what fits your setup.

    Transfer only changes confirmed for your vehicle.

Inside your READ FIRST guide

Open full PDF ↗
Page 1 of the approved JRJ READ FIRST customer guide

Before you download

A clear path from file to review.

What comes with a downloadable tune file?

The selected HP Tuners .HPT file and the JRJ READ FIRST PDF guide. The download does not include a camshaft, tuning interface, vehicle credits or a custom remote tuning service.

Is the vehicle name enough to choose a file?

Use the vehicle, year and engine to narrow the directory, then review the actual product and file details. Controller, operating system, installed cam, injectors, fuel and other hardware must be compared with your own setup. Keep an untouched copy of your original read and follow the READ FIRST guide.

Will my truck sound exactly like the video?

The video shows one 5.3L Gen IV setup. Exhaust, installed hardware and operating conditions affect the sound and result. It does not represent every engine or file in the directory; choose by the actual product details and your vehicle’s original read.

Explore the broader cam download hub for other listed vehicles and generations.

All Chopacabra downloads