Diablo Sport Modified PCM and inTune i3 Programmer

2020 Ram 1500 5.7L HEMI

PKITDR578S20-I3

Overview:

The Diablo Sport Modified PCM and inTune i3 Programmer is a comprehensive performance tuning solution designed specifically for the 2020 Ram 1500 equipped with the 5.7L HEMI engine. This kit includes a preprogrammed, unlocked Powertrain Control Module (PCM) and the inTune i3 handheld programmer, allowing enthusiasts and professional tuners to unlock the full potential of their truck’s engine and transmission. Ideal for those seeking improved horsepower, throttle response, and overall driving experience, this package offers a plug-and-play upgrade that enhances performance without sacrificing reliability.

With factory calibrations saved and multiple octane-specific tunes included, this system provides flexibility for daily driving and spirited performance. The inTune i3 programmer’s intuitive interface and Wi-Fi update capability make it easy to customize and maintain your vehicle’s tune over time.

Key Features:

This performance kit combines advanced tuning technology with user-friendly controls to deliver a tailored driving experience. Key features include:

• Modified PCM preprogrammed and unlocked for use with DiabloSport devices
• inTune i3 handheld programmer with full-color touchscreen and Wi-Fi update capability
• Performance tunes for 87, 91, and 93 octane fuels included
• Adds approximately 25-30 rear wheel horsepower on premium fuel
• Disables Multi-Displacement System (MDS) for consistent power delivery
• Adjusts throttle response for improved pedal feel and responsiveness
• Removes vehicle top speed limiter for unrestricted driving potential
• Includes performance Transmission Control Module (TCM) tune optimized for the 8-speed automatic transmission
• Reads and clears diagnostic trouble codes (DTCs) with data logging capabilities
• Supports custom tunes from CMR for further personalization

Construction & Design:

The modified PCM is engineered to meet or exceed OEM standards, ensuring reliable operation and seamless integration with your Ram 1500’s existing systems. The inTune i3 programmer features a durable ABS body with a vibrant color touchscreen designed for ease of use in all lighting conditions. The handheld device is compact and ergonomically designed for comfortable handling during tuning sessions. Both components are built to withstand the rigors of automotive environments while delivering precise control over engine and transmission parameters.

Performance & Sound

By unlocking additional horsepower and torque, this tuning solution enhances acceleration and overall vehicle responsiveness. The disabling of the MDS system ensures consistent V8 power delivery, eliminating the occasional cylinder deactivation that can affect throttle smoothness. Adjustments to throttle mapping improve pedal feel, providing a more direct connection between driver input and engine response. While the primary focus is on performance gains, the tuning also optimizes idle RPM for a stable and refined engine sound during idle conditions.

Installation & Fitment:

Installation is straightforward and designed for the 2020 Ram 1500 5.7L HEMI model. The modified PCM is a direct OEM replacement, requiring no vehicle modifications. Before removing the stock PCM, it is essential to save your vehicle’s original calibration using the inTune i3 programmer, as outlined in the included instructions. The programmer connects easily via the OBD-II port, allowing for quick tune uploads and diagnostics. Removal and installation videos are available on DiabloSport’s YouTube channel to assist with the process.

What's Included:

• Modified Powertrain Control Module (PCM) preprogrammed for 2020 Ram 1500 5.7L
• inTune i3 handheld programmer (Part #8345) with preloaded tunes
• Instruction manual with detailed installation and tuning guidance

Ideal For:

This kit is perfect for Ram 1500 owners who want to enhance their truck’s performance without compromising drivability or reliability. It suits enthusiasts looking for increased horsepower and improved throttle response, as well as professional tuners who require a flexible, customizable platform. Whether for daily driving, towing, or spirited weekend runs, this tuning solution delivers measurable gains and enhanced control.

Emissions Note

This product is not CARB (California Air Resources Board) compliant and is not legal for use in emissions-controlled states. Please verify local regulations before installation.

DiabloSport makes handheld tuners and ECU tuning solutions aimed at unlocking additional performance and improving drivability for many late-model domestic trucks and muscle cars. Their devices and supported tuning ecosystem are commonly used to optimize engine and transmission calibrations after mods like intakes, exhaust, or gearing changes.