JRJ Racing · Stage 3 cam remote tuning
Stage 3 Cam Remote Tuning
Bring the complete Stage 3 combination together with a tune based on your own read. Give Jason the exact cam, supporting parts and drivetrain details, then choose how much tuning support the build 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.
Build your Stage 3 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, confirm the transmission and drivetrain, then select the tune type so the builder can show only the options supported by that path.
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.
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
- —
- Tune Type
- —
- What vehicle is the engine and PCM going into?
- Modifications
- —
- Blowers
- LSA: No / Hellcat: No
- Total
- —
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?
List the cam, engine changes, heads, intake, fuel system and drivetrain as one complete build. Explain the intended use and the behavior you want reviewed so Jason can work from specific details and logs.
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
Include the complete cam card, installed converter or clutch, heads, intake and fuel-system details. Describe whether the vehicle is used on the street, at the track or both, and identify the driving behavior you want Jason to review.
Select the exact supported cam for the vehicle and engine, or supply the requested values through add your own cam. Identify the completed fuel, airflow and drivetrain setup. A larger stage label must not be used as a substitute for a cam card.
Straight answers
Stage 3 Cam tuning questions
Why isn't there one Stage 3 horsepower chart?
A power figure is useful only with the exact cam, engine, supporting parts and test conditions. Send your build details and goals to JRJ. Any manufacturer dyno result applies to that stated test combination and is not a promised result for your vehicle.
What cam information is needed?
Provide the manufacturer, exact part number and cam card, including the requested duration, lift and lobe-separation information. Tell JRJ about the actual valvetrain and phaser arrangement.
Is Stage 3 just an extra charge on top of stock tuning?
Full Custom includes the applicable standard cam charge above the stock service, then adds any mapped higher-stage charge. Stage 3 does not replace or bypass the standard cam charge.
Can a Stage 3 build use Base Tune?
Use the Base option only when it is offered for your supported combination and its limited starting-tune scope is appropriate. Base includes two revisions; the applicable higher-stage charge is additional.
When is Full Custom the better fit?
Choose Full Custom when you want datalog review and supported refinement beyond the initial starting tune. It includes up to five revisions, with the complete build details and logs kept in the Tune Portal.
Will tuning compensate for the wrong converter or hardware?
Tuning is built around the parts installed; it is not a replacement for the cam manufacturer's hardware requirements or mechanical preparation. Identify the transmission and converter or clutch before choosing the service.
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.
