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J.R. Jones Racing

1999–2013 Silverado / Sierra / Yukon / Denali (4.8L, 5.3L, 6.0L ETC | Sloppy Mechanics Stage 3 Cam Tune Files | 450HP | HP Tuners Required)

1999–2013 Silverado / Sierra / Yukon / Denali (4.8L, 5.3L, 6.0L ETC | Sloppy Mechanics Stage 3 Cam Tune Files | 450HP | HP Tuners Required)

$349.99 USD
$349.99 USD
Sale Sold out
Fitment Checked Match year, engine, cam, and mods before ordering.
HP Tuners / EFI Live You need a supported device to read and flash tune files.
Real Support Unsure? Text 910-239-7598 before checkout.

Tune File Workflow

How Your Tune File Order Works

  1. Purchase your tune file.
  2. After checkout, you’ll receive an email with your secure JRJ Tune Portal upload link.
  3. Open the portal and upload your stock read file, vehicle details, and any logs if available.
  4. Your order will be reviewed and built through the portal.
  5. When your tune file is finished, you’ll receive an email alert with download instructions.

No need to email files manually — everything is handled through your customer upload portal.

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About This Product

Custom tuning requires a mechanically sound vehicle and the correct flashing device. Full tuning terms, responsibility agreement, and upload instructions are completed securely inside the JR Jones Racing Tune Portal after purchase.

Pre-Written Tune File · High Performance Build

Ultimate GM 450HP Truck Tune

Gen III + Gen IV LS Trucks · One File. No Variants. Just Results.

This is the Ultimate GM 450HP pre-written tune file, built from a real-world cammed LS truck combo and refined for Gen III and Gen IV GM trucks. If your truck is running a rowdy cam, long tubes, intake upgrades, and you want it to start clean, idle mean, and pull hard, this file is built for that kind of setup.

4.8L / 5.3L / 6.0L Silverado / Sierra Tahoe / Yukon / Suburban Engine + Transmission Tune
Email Your File → Text Jason How To Send File

Built Around a Proven 450HP Combo

The demo truck used to develop this file is a real street build, not a guessed calibration.

  • Sloppy Mechanics Stage 3 Camshaft
  • TBSS Intake Manifold
  • Cold Air Intake
  • Long Tube Headers
  • High-Flow Y-Pipe & Free-Flowing Exhaust
  • Full Engine Tune AND Transmission Tune Included

What This Tune Delivers

  • Aggressive, consistent 450HP-capable calibration
  • Clean cold start with controlled cam chop once warm
  • Helps fix bucking, surging, stalling, and poor idle behavior
  • Sharper throttle response without making the truck jumpy
  • Optimized spark, fueling, airflow, and torque management
  • Transmission tuning that firms up shifts without abusing the drivetrain

Compatibility

  • GM Gen III & Gen IV LS trucks — 4.8L / 5.3L / 6.0L
  • Silverado / Sierra 1500 & HD
  • Tahoe, Suburban, Yukon, Denali, Avalanche, Escalade
  • Best suited for big-cam, full bolt-on LS truck builds

Requirements

  • HP Tuners MPVI2 / MPVI3 / MPVI4 or EFI Live interface
  • HP Tuners credits or EFI Live licenses — not included
  • Windows laptop with VCM Suite or EFI Live software
  • Ability to read, save, email, and flash your tune file

What We Need From You

  • After purchase, email your HP Tuners or EFI Live factory read file to Tunes@JRJonesRacing.com
  • Include your order number and full mod list — cam, intake, headers, exhaust, injectors, converter, etc.
  • Confirm your engine size and transmission type
  • Typical turnaround can be fast, but allow up to 24 hours depending on workload
  • Up to 3 revisions included if your setup needs follow-up adjustments

Flashing & Safety Notice

Flashing a PCM or TCM always carries risk if done incorrectly. Protect your hardware and follow safe flashing practices.

  • Never flash over Bluetooth or Wi-Fi — use a hard-wired USB connection only
  • Connect a battery charger to maintain stable voltage during the write process
  • Do not cycle the key, unplug cables, or move the laptop during the write

J.R. Jones Automotive & Performance is not liable for PCM/TCM damage caused by unsafe flashing practices, unstable voltage, interrupted writes, or hardware failures.

Need Help Sending Your Tune File?

Watch the step-by-step video showing how to read your stock file with HP Tuners and email it in for calibration.

Watch How-To Video →