JRJ Racing · HEMI cam remote tuning
HEMI Cam Remote Tuning
Build your HEMI cam tune around the actual 5.7L, 6.1L or 6.4L combination in your Ram, Charger, Challenger, 300, Durango or Jeep. Supply the cam, PCM, MDS and VVT hardware details, then choose the supported Base or Full Custom service for your vehicle.
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.
Build your HEMI cam tune
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?
Keep the HEMI's vehicle identity, cam card, MDS/VVT arrangement, fuel and drivetrain details together. Full Custom adds datalog review and up to five revisions within the supported service 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
Provide the cam manufacturer, part number and cam card, plus the installed lifters and phaser arrangement. For truck-specific details, see the Ram 5.7 HEMI guide. If your work is limited to MDS, review the separate MDS delete tune scope before ordering.
Choose the supported vehicle and installed HEMI engine in the builder. Identify the cam, MDS hardware and VVT or phaser arrangement where present, plus the transmission and controller access. A Ram, car and Jeep are not interchangeable tuning applications.
Straight answers
HEMI Cam tuning questions
What details should I provide for a boosted HEMI?
List the supercharger or turbo system, including any Hellcat-blower conversion, along with the cam, injectors, fuel pumps and fuel used. Include the transmission, converter and PCM information. Ask Jason to confirm the complete combination and service scope if it is not clearly listed in the builder.
What about controller unlocking?
Check HP Tuners' requirements for the actual PCM and vehicle. Their controller-access guide identifies upgraded PCM requirements for listed 2015+ applications and additional access requirements for listed 2018+ vehicles.
Can one HEMI cam tune work across Ram, Dodge, Chrysler and Jeep?
A shared engine name does not establish cross-vehicle compatibility. Choose the actual vehicle and engine and supply its original read and installed hardware details.
What cam information is required?
Provide the manufacturer, exact part number and cam card. Identify the lifter and phaser hardware that was fitted so the tuning request describes the completed engine.
Should I select MDS and VVT changes together?
Describe MDS lifter hardware and the VVT phaser arrangement separately, where fitted. State what was retained or replaced during the cam swap. If a performance cam is installed, include it in the remote-tune build; the separate MDS-only service has a narrower scope.
Can Base include my cam and supporting modifications?
Base includes the applicable standard cam charge and two revisions. Higher-stage charges and supported selected modifications are additional. Review the builder's actual itemized price for the combination.
Sources & application notes
Technical references identify the engine and equipment discussed. The builder and original stock read determine the selected application; these specifications are not a power-gain promise.
