JRJ Racing · LS swap planning
LS Swap Remote Tuning Review
An LS swap needs its complete combination understood before the tune is chosen. Bring Jason the donor engine, controller, harness and drivetrain details so he can review the work your project actually needs.
Personally tuned by Jason
Work directly with Jason—the owner and tuner who built and tuned these combinations in the shop.
Built around your vehicle
Your original stock read, exact cam and installed parts guide the tune.
Support through your Tune Portal
Keep your files and feedback together. Full Custom includes datalog review and up to five revisions.
Review the available tuning choices
Choose your vehicle and exact cam, select Base or Full Custom, then add your installed modifications.
HP Tuners required · equipment & credits
Requires supported HP Tuners MPVI2, MPVI3 or MPVI4 equipment for your exact vehicle. Hardware, licensing and required controller access are separate. RTD and TDN are not currently supported.
Vehicle first. Tune path before modifications.
Choose each part of the vehicle in order. After the camshaft, select your transmission, drivetrain, and PCM / controller. It’s okay to choose “I don’t know” for the controller. Then choose your tune type and supported modifications.
Doing an engine swap? Choose the original year, make, and model for your engine and PCM. Select “Swap Tune” below to enter the vehicle it’s going into.
Enter the specifications shown on your cam card. Durations must be measured at .050-inch tappet lift—not advertised duration.
Get ready for the tuning processPrepare early: download the PID/channel list and any logging instructions or VCM Scanner setup files available for your controller, so you’re ready when tuning begins.
It’s okay if you don’t know—choose “I don’t know” and keep building. Otherwise, select the controller shown in your tune read or on your PCM.
Downloading is optional. Bench Tuning / Mail-In Tuning supports confirmed P01 or P59 controllers only.
Choose how far you want to take it
Complete the vehicle fields above to choose your tune. Click a card to choose your service. Service selected. Choose your installed modifications below.
Selected service: scope, revisions & turnaround
Modifications & options · select your installed parts
This add-on covers the extra troubleshooting involved when changing engine and computer generations. Enter the vehicle the engine and PCM are going into below.
Paid selections are matched to the existing Shopify tune add-on products and added with the tune. Free and unlisted details stay attached to the order.
Downloadable .HPT files are limited to the selected supported camshaft calibration or supported DOD/AFM/MDS/VVT delete calibration. They do not include tuning changes for blowers, headers, intakes, injectors, fuel systems, heads, converters, transmissions, tire size, gear ratio, or other add-ons.
Downloadable files cover the listed cam or delete setup and do not include modification add-ons. If your vehicle has additional modifications, choose a Base Tune or Full Custom Remote Tune.
Shopify is verifying that the exact file is available for sale.
Open the library with this selection, then review the listed file details and all seven buyer requirements. If no matching file is listed, choose a remote tune built from your own read.
No closest file will be substituted. Choose a tune built from your own vehicle file instead.
Vehicle → exact cam → transmission → service → modifications
- Vehicle
- —
- Engine
- —
- Transmission / Drivetrain
- Not Provided / Not Provided
- Cam
- —
- VVT / phaser
- Tune Type
- —
- What vehicle is the engine and PCM going into?
- Modifications
- —
- Blowers
- LSA: No / Hellcat: No
- Package subtotal
- —
Before tax, shipping and any checkout discounts.
From your build to your tune
Your tune, one step at a time
After checkout, your Tune Portal keeps the build details, files and conversation in one place.
- 01
Configure your tune
Use the builder to choose your vehicle, cam, service and installed modifications.
- 02
Upload your stock read
After purchase, use your Tune Portal to send the original read, cam card and complete build details.
- 03
Receive Revision 1
Revision 1 is guaranteed within 24–72 business hours after JRJ receives your stock read. This guarantee applies to the first revision only.
- 04
Log, review and refine
Full Custom includes datalog review and up to five revisions for the purchased setup. Later submissions enter the queue in the order received; there is no guaranteed completion date.
Your private Tune Portal
One place for every file and conversation.
Upload your stock read, receive your tunes and send feedback directly to Jason. Full Custom datalogs and revisions stay with your order.
- Original reads & delivered tunes
- Datalogs & revisions
- Messages & order progress
How we work through your revisions
Revision 1 is guaranteed within 24–72 business hours after JRJ receives your stock read. The tune is based on your original read and the build details you provide. Follow the delivery instructions and report how the vehicle behaves.
Base Tune includes two revisions. Full Custom includes datalog review and up to five revisions for the purchased setup. The next adjustment depends on the logs, feedback and issues identified; there is no fixed sequence that fits every build.
After Revision 1, progress depends on vehicle condition, installed parts, mechanical or installation issues, tuning equipment and the quality of the logs. It also depends on when you have time to log and upload, when JRJ receives usable files and the time needed to review them.
Logs and follow-up requests enter the queue and are handled in the order received. Waiting for logs, answers, parts or repairs pauses the next step. A new submission does not start another 24–72-business-hour guarantee.
JRJ will work carefully and in good faith to help with your purchased service. Remote tuning cannot guarantee perfection, mechanical stability or a specific power result. Review the service and refund terms before ordering.
What changes in the tune?
Document the project in one place: what the engine came from, which controller and harness are installed, how the transmission is controlled, and what has changed. This gives Jason a useful basis for confirming the tuning scope.
Startup & idle
Starting airflow, idle control and in-gear behavior are reviewed against the cam and operating data. Describe when a stall, surge or restart problem occurs.
Airflow & fueling
Provide the intake, injectors, fuel and sensor information. Relevant airflow and fueling changes must be assessed with the correct component data.
Valve & torque control
Select the cam and any installed cylinder-deactivation or VVT hardware changes applicable to your engine. The tune must reflect the parts actually installed.
Transmission & converter
Identify the transmission, converter, tire diameter and axle ratio. Their effect on the driving experience belongs in the build information.
The controller, service selected and installed hardware determine which adjustments are available. tune is not a repair for incorrect mechanical installation.
Have these details ready
- Select your year, make, model and engine in the dropdowns
- Select Stock Cam or the exact installed cam from the full list
- Original stock read, controller and operating-system ID
- Installed cylinder-deactivation and VVT hardware, where equipped
- Transmission, converter, axle ratio and tire size
- Injectors, fuel type, intake, exhaust and other changes
Send the donor engine identification, installed PCM, harness, throttle arrangement and transmission details with your enquiry. Include the original read if you have it and explain the startup, fan or other work you need.
For a swap, send JRJ the donor engine, installed PCM, harness, recipient chassis and transmission details before ordering. A donor-vehicle choice identifies only part of that combination. Include the original read if available and the specific work you need reviewed.
Straight answers
LS Swap tuning questions
Can I use a downloadable file from a similar LS engine?
The engine name alone is not enough. Downloaded .HPT files have their own listed application and compare-and-copy requirements; they are not universal swap or replacement-controller files.
What if I do not have the original tune read?
Send the installed PCM identification and explain which files you have. JRJ can review that starting point with the rest of the swap details before you choose a tuning service.
Can I order an LS swap tune by selecting the donor vehicle?
A donor selection can help identify the engine, but it does not confirm the complete swap. Have JRJ review the controller, harness, transmission and project details before purchase.
What should I send with an LS swap inquiry?
Send the donor engine details, ECM identification and original read if available, harness information, throttle arrangement, transmission, injectors, airflow sensors, cam card and chassis description.
Are VATS changes and fan setup included automatically?
Ask JRJ about the VATS, fan-control or startup work you need and include the installed controller and wiring details. Confirm which work is included in your service before purchase.
Will a Base Tune cover my entire swap?
Base has a limited starting-tune scope with two revisions. Whether your swap can use that service must be confirmed first, including any separate controller or startup work.
Sources & application notes
Use these references to identify your engine and check equipment requirements. Select the actual vehicle and installed parts when building your tune.
