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J.R. Jones Racing

1998–2006 Chevy Silverado / Sierra 4.8 5.3 6.0L Chopacabra Cam Tune File | Texas Speed Chopacabra Pre-Written Tune (HP Tuners / EFI Live Required)

1998–2006 Chevy Silverado / Sierra 4.8 5.3 6.0L Chopacabra Cam Tune File | Texas Speed Chopacabra Pre-Written Tune (HP Tuners / EFI Live Required)

$249.99 USD
$249.99 USD
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After checkout, use the tune upload portal to submit your stock read file, VCM Scanner logs, and build details.
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📦 How delivery works

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Get the file now — set it up yourself I send the base tune file right away. You compare it against your current file and copy your settings over.
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I do it for you Send me your factory read file and I'll build your tune. Allow 24–72 hrs — I work weekdays full-time; weekends I'm still at it, just not all day.
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Texas Speed Chopacabra Tune File

1998-2006 GM LS Chopacabra Cam Tune File

Built specifically for the Texas Speed Chopacabra camshaft, this pre-written tune file is designed for 1998-2006 GM LS vehicles running 4.8, 5.3, 5.7, and 6.0 combinations. This file is built to help deliver the aggressive idle people want from the Chopacabra while improving startup, idle quality, throttle response, and overall drivability. Send in your stock read file and mod list, and we'll build your tune around your exact setup.

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Texas Speed Chopacabra Cam Tune Built specifically for Chopacabra cam setups needing proper idle control, startup tuning, and street drivability.
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Pre-Written Performance File Designed around real-world Chopacabra combinations with common supporting mods like headers, intake upgrades, and converters.

Built Specifically For

  • Texas Speed Chopacabra camshaft setups
  • 1998-2006 GM LS truck, car, and SUV platforms
  • 4.8L, 5.3L, 5.7L, and 6.0L LS-based combinations
  • Street-driven builds wanting a strong idle and better drivability
  • Common supporting mods like headers, intake upgrades, injectors, and converter changes

What's Included

  • Cold start and hot start improvements
  • Idle airflow, fueling, and spark adjustments for Chopacabra behavior
  • Smoother throttle response and drivability tuning
  • Up to 3 revisions if your combination needs follow-up changes
  • Requires HP Tuners hardware and credits for flashing

How It Works - HP Tuners File Required

  • After purchase, email your HP Tuners factory read file to tunes@jrjonesracing.com
  • Include your order number and full mod list - cam, injectors, headers, intake, converter, gear ratio, tire size, and anything else relevant
  • Most tune files are returned quickly, but revised files may take up to 24 hours depending on workload
  • You receive your tuned file by email, ready to flash with HP Tuners

Flashing & Safety Notice

Flashing your PCM can be dangerous if not done properly. Follow these steps to help avoid PCM or ECU damage:

  • Never flash over Bluetooth or Wi-Fi - always use a hard-wired connection
  • Connect a battery charger to maintain stable voltage during the write process
  • Do not interrupt the flashing process once writing has started

J.R. Jones Automotive & Performance is not liable for any PCM or ECU damage caused by improper flashing, unstable voltage, or unsafe tuning practices.

Compatible Vehicles - 1998-2006 GM LS Platforms ›
  • 1999-2006 Chevrolet Silverado 1500
  • 1999-2006 GMC Sierra 1500
  • 2000-2006 Chevrolet Tahoe
  • 2000-2006 GMC Yukon
  • 2000-2006 Chevrolet Suburban
  • 1998-2002 Chevrolet Camaro
  • 1998-2002 Pontiac Firebird
  • 1997-2006 Chevrolet Corvette
  • 2004-2006 Pontiac GTO
  • 2004-2006 Cadillac CTS-V
  • 2005 Cadillac Escalade
  • 2005-2006 Pontiac Grand Prix
  • 2006 Chevrolet Trailblazer SS
  • Other 1998-2006 LS swap or LS-based applications using HP Tuners

Need help sending your tune file?
Watch our step-by-step video on how to read your stock file using HP Tuners and email it for calibration.

▶ Watch How-To Video