DiabloSport PKITCHALV821-i3 Modified PCM & inTune i3 Combo - PKITCHALV821-I3

Compatible with 2021 5.7L/6.4L Challenger

Part Number: PKITCHALV821-I3

The DiabloSport inTune i3 + Unlocked PCM Kit is the complete performance tuning package for 2021 Dodge Challenger models equipped with the 5.7L or 6.4L HEMI. With locked factory PCMs limiting tuning, this kit provides everything you need to safely unlock your Challenger’s full performance potential. Preloaded with dyno-tested performance tunes, the inTune i3 handheld programmer (PN 8345) delivers up to 25 rear-wheel horsepower gains, improved torque, sharper throttle response, and refined 8-speed transmission calibrations for quicker, smoother, and more confident shifting. The result is a Challenger that feels more powerful, more responsive, and more fun to drive. For enthusiasts who want more flexibility, the Platinum i3 supports CMR custom tuning, enabling dyno-proven calibrations tailored for bolt-ons or advanced modifications. Built-in data logging and diagnostic tools make it easy to monitor and refine performance as your build evolves. This kit includes the inTune i3 handheld programmer and a DiabloSport Modified PCM shipped via a one-time cross-shipment, allowing you to start tuning right away while keeping your stock PCM safe and unaltered. For 2021 Challenger HEMI owners who want power you can feel, sharper drivability, and tuning flexibility, the inTune i3 + Unlocked PCM Kit is the ultimate upgrade.

Features and Benefits

• 2021 Challenger 5.7/6.4
• Available tunes: 93 Octane Diablo Tune, 91 Octane Tune, Performance
• TCM tune for 8 speed transmission included
• Gain up to 20 rwhp and 18 rwtq (25 on 6.4L) on 93 octane
• 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
• Windshield mount included
• Control MDS and traction control on/off
• inTune 3 packed with preloaded tunes and end user adjustments
• Full color touch screen device
• WiFi update capability
• Multi-license capability
• Datalogs
• Reads/clears DTCs
• Includes PCM Preprogrammed for your vehicle
• Unlocked for use with DabloSport devices
• OEM replacement
• Removal/Installation videos available on our YouTube channel

NOTE: YOU MUST SAVE YOUR STOCK CALIBRATION WITH YOUR TUNING DEVICE BEFORE REMOVING THE STOCK PCM FROM THE VEHICLE. PLEASE REFER TO THE INSTRUCTIONS THAT COME WITH YOUR UNLOCKED PCM.