Mail-In Gen 3 LS PCM Reprogramming – Startup & Basic Tune

Get your Gen 3 LS swap running right—the first time.

This Mail-In PCM Reprogramming service is built for stock and mildly modified setups that need a clean, reliable startup and solid drivability without the guesswork.

Whether you're finishing a swap or cleaning up a rough-running setup, this service handles the essentials so you can focus on getting the car on the road.

After completing your order, fill out the Build Spec Form. You will receive a copy via email—please include it in your shipment or reference your order number inside the box

Fill out Form Here:

https://forms.gle/xph2BZz9vA63TYzE7

Shipping your PCM:

You are responsible for shipping costs when shipping your PCM to The LS Swap Shop, Return shipping is included in the service!!

https://thelsswapshop.myshopify.com/pages/the-ls-swap-shop-pcm-shipping-instructions

Calibration Levels Explained:

Stock Camshaft
Designed for stock or near-stock setups. Includes essential adjustments such as VATS (security) removal, fan control setup, emissions-related DTC management, gear ratio/tire size correction, and a clean startup calibration for factory-style drivability.

This option is intended for vehicles running stock cams or very mild configurations with no significant valvetrain changes.

Mild Camshaft Startup Calibration
Includes everything in the Stock Camshaft Startup Calibration, with additional startup and idle adjustments designed to support mild camshaft setups such as Sloppy Stage 2, Truck Norris, and similar profiles.

This helps improve idle quality, cold start behavior, and overall drivability for lightly modified engines while maintaining stability and ease of use. Allowing you to drive your vehicle either to the tuner or to street tune/dyno tune it yourself.

What’s Included:

✔ VATS (security) removal
✔ Fan control setup
✔ Rear O2 / EVAP / unnecessary DTC deletes
✔ Gear ratio & tire size correction
✔ Startup calibration for stock & mild cam setups (Sloppy Stage 2, Truck Norris, etc.)
✔ Improved idle stability & drivability

Supported Setups:

✔ Gen 3 PCMs (P01 / P59)
✔ Stock to mild cam configurations
✔ NA (naturally aspirated) builds

Not Supported (at this time):

✖ Full custom cam tuning
✖ Injector scaling
✖ Boosted (turbo/supercharged) setups
✖ Gen 4 ECUs

How It Works:

1. Purchase this service

2. Ship your PCM to us

3. Fill out the required info form (link provided after purchase)

4. Your PCM is reprogrammed and shipped back ready to install

Turnaround Time:
2–4 business days after receiving your PCM

🔧 Why Choose The LS Swap Shop?

We specialize in LS swaps—this isn’t a generic file.

Every PCM is handled individually and configured based on your setup to ensure a clean startup and solid drivability.

Built by someone who actually works on these swaps—not just behind a screen.

Important Notes:

• All calibrations are based on information provided in the build spec form. Accuracy of results depends on correct customer input.

• This is a base startup and drivability tune

• Additional tuning may be needed for highly modified setups

• Off-road use only

• No refunds after service is completed