Your Gen III 5.3L Chopacabra file reference

This download is for the listed 1999–2006 GM Gen III 5.3L and Texas Speed Chopacabra cam combination. It gives you an .HPT reference to examine alongside your original read, with the engine generation and cam choice kept together.

Custom remote tuning, vehicle-specific revisions, tuning hardware, credits and vehicle licensing are separate from this file purchase.

Application: 1999–2006 GM Gen III 5.3L
Camshaft: Texas Speed Chopacabra
File format: HP Tuners .HPT
Delivery: Digital download after purchase

Check the full match

Check the 5.3L Gen III engine and exact Texas Speed Chopacabra cam in the vehicle. A shared Silverado or Sierra model name does not make the 6.0L or later L83 Chopacabra downloads interchangeable with this product.

Confirm the controller, operating system, transmission, fuel-system parts and supporting modifications before purchase. Review the source file against your original read before copying changes. Do not write an unmatched file directly to the vehicle.

Review the Tune Buyer Requirements beside Add to cart before purchasing.

What comes with your download

One .HPT tune file for the application and cam named above, for reference and HP Tuners Compare & Copy.
The JRJ video tutorial and step-by-step PDF guide included with downloadable tune purchases.

How to use the file

Read and save your vehicle’s original file with supported HP Tuners equipment.
Open the original and purchased files in VCM Editor. Compare the differences and copy only changes verified for your controller, operating system and build.
Save the edited tune separately and verify the result through appropriate datalogging. Different injectors, sensors, fuel or drivetrain parts need their own review.

Want JRJ to build the tune for your vehicle?

Choose remote tuning when you want JRJ to work from your stock read, complete build details and feedback. Use the builder to check the service and price for your exact vehicle.

Build your remote tune

J.R. Jones Racing

1999–2006 GM 5.3L Texas Speed Chopacabra .HPT Tune File

Name: 1999–2006 GM 5.3L Texas Speed Chopacabra .HPT Tune File
Brand: J.R. Jones Racing
Price: 99.99 USD
Availability: InStock

$99.99 USD

Sale Sold out

Digital delivery — no physical product ships. Your downloadable .HPT file is delivered electronically after purchase. Nothing will be mailed to you.

Verified customer feedback

Judge.me reviews Read customer feedback

Before You Add to Cart

Tune Buyer Requirements

Please read and confirm each item below before adding 1999–2006 GM Gen III 5.3L Texas Speed Chopacabra Cam Tune File to your cart.

Coupon notice: FIRSTTUNE20 is not valid on downloadable or pre-written .HPT/.CTZ tune files.

I understand this .HPT file is a Compare & Copy reference for my own stock read, not a ready-to-flash replacement. I must compare it in HP Tuners VCM Editor and copy only applicable changes after checking compatibility. File-use terms (opens in a new tab)
I understand this download covers the listed camshaft or delete setup only. It is not built from my stock read, and modification add-ons or custom revisions are not included. Service scope (opens in a new tab)
I understand I must verify the controller, operating system, engine, transmission, fuel system, injector data and modifications before using this file. A matching year and model alone does not confirm compatibility. Compatibility requirements (opens in a new tab)
I understand supported HP Tuners equipment, software and the required vehicle credits or licenses are needed. These are separate from the file purchase, and I must meet any controller unlock requirements before use. Equipment requirements (opens in a new tab)
I understand incorrect tune changes, incompatible files or a failed flash can cause poor operation, a no-start or damage. I must follow the instructions and use stable battery voltage while reading or writing. Flashing and vehicle risk (opens in a new tab)
I understand this download does not cover extra changes such as boost, injectors, headers, gearing or transmission modifications. If my build needs adjustments beyond the listed setup, I need a Base Tune or Full Custom Remote Tune. Service and delivery terms (opens in a new tab)
I understand digital delivery is complete when the file or download link is made available. Download sales are final after delivery, subject to the refund policy and remedies for verified JRJ errors. Refund policy (opens in a new tab)

0 of 7 confirmed

View full details