THE CAM YOU CHOSE. THE FILE YOU NEED.
Texas Speed ChopacabraDownloadable tune files
Find your vehicle. Review the file. Start with the right reference for your build.
.HPT file + READ FIRST guide + Video tutorial
For HP Tuners Compare & Copy into your original read.
01 / CHOOSE YOUR APPLICATION
Start with your vehicle.
Choose a year, then narrow the catalog to your vehicle and engine.
Catalog selections narrow listings; they do not confirm controller, OS or cam compatibility.
Your file options
Choose your vehicle to see listingsYour listings will appear here with the application, file details and purchase link.
No catalog listing for that selection.
Try a broader search or ask JRJ to help identify the right tuning path.
Get help with my setup ↗Know your engine family? Browse the featured files 19 listings
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.
- 01
Keep your original read.
Your vehicle’s stock file stays the starting point.
- 02
Compare the selected file.
Follow the guide to review differences in VCM Editor.
- 03
Review what fits your setup.
Transfer only changes confirmed for your vehicle.
03 / REVIEW YOUR SETUP
Same cam name.
Check the whole combination.
A cam name helps you find a file. Your engine, controller, operating system and installed parts determine what needs to be reviewed.
Read the Chopacabra tuning guide ↗- Application
- Year, vehicle, engine and engine generation.
- Cam & supporting parts
- Exact cam, injectors, fuel and other modifications.
- Controller & OS
- Review against your own original read.
- Transmission
- Check any transmission data separately.
BEFORE YOU BUY
A few useful answers.
What does the $99.99 purchase include?
One selected downloadable HP Tuners .HPT file, the JRJ READ FIRST PDF and the included video tutorial. See the product page for its exact application and requirements.
Do I write the purchased file directly to my vehicle?
Use the included Compare & Copy workflow. Preserve your original read and review only changes relevant to your build. Do not write an unmatched complete file.
Are credits or an interface included?
The download does not include an HP Tuners interface, vehicle credits, licensing or physical parts.
Does this include custom tuning or revisions?
This is an existing file for comparison. Custom remote tuning and vehicle-specific revisions are a separate service.