The DiabloSport inTune i3 Platinum + Unlocked PCM Kit is the complete tuning solution for the 2021 Ram 1500 5.7L HEMI. From the factory, these trucks ship with locked PCMs that prevent tuning. This package includes a DiabloSport Modified PCM and the inTune i3 Platinum handheld programmer (PN 8345), giving you everything you need to safely unleash your Ram’s full potential.
Preloaded with dyno-tested performance calibrations, the inTune i3 Platinum delivers up to 30 rear-wheel horsepower gains, stronger torque, quicker throttle response, and refined 8-speed transmission behavior for faster, smoother shifts. These improvements provide more confident acceleration, towing strength, and daily drivability.
The kit also allows for MDS (Multi-Displacement System) disable, keeping your HEMI in full V8 mode whenever you want maximum performance. For enthusiasts adding bolt-ons or advanced upgrades, the Platinum i3 supports CMR custom tuning, giving you access to DiabloSport’s nationwide network of tuners for dyno-proven calibrations tailored to your build. Built-in data logging and diagnostics make it simple to monitor and fine-tune your Ram’s performance.
⚠️ Important Note: On 2021+ models, you must save your stock calibration with your tuner before removing the factory PCM. Instructions are included for a smooth installation.
For 2021 Ram 1500 5.7L HEMI owners who want real horsepower gains, MDS disable, and sharper drivability, the inTune i3 Platinum + Unlocked PCM Kit is the ultimate performance upgrade.
Features:
- 2022 Ram 1500 5.7 8 Speed
- Add 25-30 rwhp on premium fuel
- Supports custom tuning from our network of CMR tuners
- Disable MDS
- Adjust throttle response for optimal pedal feel
- Remove vehicle top speed limiter
- Adjust idle RPM
- Tunes for 87, 91 and 93 octane fuel included
- Performance TCM tune for 8 speed transmission included
- Includes PCM programmed to your vehicle and inTune 3!
- No vehicle downtime for tuning!
- Preloaded with multiple performance tunes
- Read/clear DTC codes
- Disable MDS for full time V8 operation!
- Adjust Rev Limiter in Drive/Neutral by +/- 500 RPM
- Disable Traction Control/ESP
- Raise or Lower Idle Speed by +/- 400 RPM
- Required bypass module or cable is included
- Speed Limiter On/Off enabling increased top speed
- Target Cooling Fan temps can be set from 150°-230° for use with cooler t-stat
- Tire Size Adjustment 20”-44”, allows for correcting speedometer for different tires
- WOT Fuel Adjustment – 1-7K RPM +/- 20%, allows for fine tuning Air/Fuel Ratio
- WOT MBT Spark 1-7K RPM +/- 10
- WOT Spark – 1-7k RPM +/- 10
