LS Swap Calibration

LS Swap Tune Files for VATS, Fan Control, Startup and Drivetrain Setup

Remote startup and swap calibration for supported GM LS controllers and engine combinations. Provide the donor engine, ECM, operating system, harness, transmission, tire size, gear ratio, fan wiring, fuel system, injectors, airflow meter, camshaft, and complete swap details.

Technical content by Jason JonesOwner and tuner

Build My Tune View Matched Products Browse .HPT Files

Choose by outcome

Three tune paths. No blurred promises.

Vehicle selections stay consistent while the delivery, revision level, compatibility rules, and customer responsibility change.

Most complete

Custom Remote Tune

Built from your stock read with private Tune Portal delivery, datalog review, and revisions to refine the calibration.

Starting at $269.99Build Custom Tune
Controlled starting point

Base Tune

Designed for startup, idle, and initial drivability. Includes one revision and does not promise the final refinement of the full custom path.

$169.99 • One RevisionStart Base Tune
Exact-match reference

Downloadable .HPT

Prewritten Compare and Copy reference files. Exact compatibility is required and custom remote revisions are not included.

Starting at $99.99Browse Downloadable Files

Why this page exists

The controller and operating system define the swap workflow

A vehicle shell and an LS engine name are not enough. The tune must be based on the actual ECM, OS, harness, transmission segments, fan control, fuel system, airflow hardware, and drivetrain configuration.

Startup Essentials

Supported VATS changes, fan control, gear and tire calibration, and initial startup configuration for the confirmed controller.

Engine and Harness

Donor engine, ECM, OS, crank and cam pattern, harness, throttle system, injectors, MAF/MAP, and sensor configuration.

Transmission and Vehicle

Transmission type, segment compatibility, converter, rear gear, tire size, speed signal, fan wiring, and chassis use.

Standalone LS calibration

A successful swap tune starts with the controller, harness and drivetrain.

An LS swap is a system, not only an engine. The calibration must agree with the ECM, operating system, crank and cam pattern, throttle control, harness, transmission segments, fuel system, injectors, airflow meter, fans, speed signal, rear gear, tire size and chassis wiring. Accurate swap details are what separate a clean startup path from guesswork.

Controller

ECM/PCM type, service number when available, operating system, stock read source and whether the harness and calibration began as a matched donor set.

Engine

Displacement, engine code, crank/cam pattern, throttle system, camshaft, injectors, fuel pressure, intake, MAF/MAP, sensors and exhaust.

Drivetrain

Automatic or manual transmission, transmission controller, segment source, converter or clutch, rear gear, tire size and vehicle speed input.

Chassis

Fan wiring and requested temperatures, fuel-pump control, A/C request, gauges, speedometer strategy, intended use and any emissions equipment retained.

01

Verify wiring and mechanical readiness

Confirm clean power and grounds, correct sensor wiring, fuel pressure, no major vacuum or exhaust leaks and a stable battery before the first read or flash.

02

Upload the correct stock read

The starting file should come from the controller being used in the swap. Include donor information and explain any segment or operating-system changes already made.

03

Complete startup configuration

Supported VATS, fan, speedometer, gear, tire and drivetrain configuration is handled within the scope stated on the selected product.

04

Choose custom refinement when needed

Cammed, injector-changed, boosted or unusual combinations may need the Custom Remote Tune path and datalog-based revisions beyond a basic startup file.

One relevant catalog result is intentional:The LS Swap hub excludes MPVI4 bundles, internal cam add-ons and unrelated physical parts. The builder still retains approved add-on checkout behavior.

Complete catalog matches

All LS swap startup, tune and interface products

Every matching product from the current J.R. Jones Racing LLC Shopify catalog is organized below by tune package, instant download, camshaft or kit, tuning tool, and supporting hardware.

Build Your Tune

Select the vehicle and camshaft, choose the tune type, then add only the modifications supported by that path.

Tuning device required: You must have an HP Tuners MPVI2, MPVI3, or MPVI4, or an EFI Live device supported for your vehicle. J.R. Jones Racing LLC does not currently support RTD or TDN devices. RTD/TDN support is planned for the future. Check device requirements. Need an interface? You can add an HP Tuners MPVI4 to your tune at the bottom of this builder if you would like to purchase one through J.R. Jones Racing LLC. Vehicle credits are sold separately.
Build Your Tune Package
Verified Vehicle Match
Choose Your Path Choose Your Tune Type

Full Custom and Base support listed modifications. Downloadable .HPT files cover only an exact supported cam or delete calibration with no modification add-ons. FIRSTTUNE20 is not valid on downloadable or pre-written .HPT/.CTZ files.

Modifications & Options
HP Tuners Credits are sold separately at HPTuners.com.
Your Tune Match
Choose year, make, model, engine, and cam selection.
Price Breakdown
Complete your vehicle selections—
Total
Select Vehicle
HP Tuners MPVI4 vehicle interface

Need an HP Tuners interface?

Purchase an MPVI4 below to include it in the same order as your tune. Vehicle credits are sold separately.

View MPVI4 Details
Final Build Summary
Vehicle
Not selected
Engine
Not selected
Transmission / Drivetrain
Not provided / Not provided
Cam
Not selected
Tune Type
Not selected
Modifications
None Selected
Blowers
LSA: No; Hellcat: No
Total
Select vehicle

Loading the secure vehicle configurator…

Before checkout

Questions specific to this page.

Every structured answer below is also visible to customers. No hidden FAQ content is added for search engines.

What is an LS swap tune?

It is a calibration for a supported LS controller and swap combination, covering the scope stated on the product such as VATS, fan, speedometer, gear/tire and startup configuration.

Can you tune from the engine year alone?

No. Controller, OS, harness, throttle system, sensors, injectors, transmission and stock read are required.

Does the base LS swap product include cam tuning?

No automatic cam-tune scope is assumed. Cammed combinations require the correct product or custom path.

Does it include transmission tuning?

Only if the selected product or builder option explicitly includes it.

Can you configure electric fans?

Supported fan control can be configured when the controller, wiring and requested fan details are provided.

What stock file should I upload?

Upload the clean read from the actual controller being used in the swap and explain any prior OS or segment changes.

Why is only one product shown?

Unrelated parts, MPVI4 bundles and internal cam add-ons are intentionally excluded from the LS Swap catalog.

Can a boosted LS swap use the startup file?

Boosted, injector-changed or unusual combinations normally require Custom Remote Tune and complete fuel/air hardware details.