DiabloSport inTune i3 Platinum + Modified PCM Kit for 2021 RAM 1500 5.7L 8-Speed eTorque (PKITDR578S21-I3)

The DiabloSport inTune i3 with Modified PCM is a tuner and programmed PCM kit for the 2021 RAM 1500 5.7L 8-speed, except E-Torque. It includes preloaded performance calibrations, with stated gains of 25–30 rwhp on premium fuel.

Overview

The kit pairs a DiabloSport modified PCM with an inTune i3 handheld programmer. The vehicle's factory PCM is locked, which prevents tuning.

Preloaded calibrations are available for 87, 91 and 93 octane fuel. The kit includes a performance TCM tune for the 8-speed transmission.

The programmer offers throttle response, idle RPM, rev limiter, speed limiter, tire size and cooling fan temperature adjustments, along with diagnostic code reading and clearing.

The tuner accepts custom tunes. For 2021 and newer models, save the stock calibration with the tuner before removing the factory PCM.

Features

• Adds 25–30 rwhp on premium fuel, as stated in the supplied product information.
• Preloaded performance tunes for 87, 91 and 93 octane fuel.
• Performance TCM tune for the 8-speed transmission included.
• Adjust throttle response and idle RPM.
• Adjust tire size from 20–44 inches for speedometer correction.
• Adjust cooling fan target temperatures from 150°–230°.
• Read and clear diagnostic trouble codes.
• Accepts custom tunes.

What's Included

• DiabloSport modified PCM programmed to the vehicle
• DiabloSport inTune i3 handheld programmer
• Required bypass module or cable
• Instruction manual

Specifications

• Brand: DiabloSport
• Part number: PKITDR578S21-I3
• Fitment: Compatible with 2021 RAM 1500 - 5.7L 8-Speed except E-Torque
• Emissions: Legal under the provisions of EPA's Tampering Policy - Not legal in CA
• UPC: 810065212139

How Ordering Works

Enter your 17-digit VIN at checkout (and your PCM calibration ID if you have it). DiabloSport programs the replacement PCM to your vehicle before it ships, so it is ready to install. Not sure which kit your vehicle needs? Send us your VIN and we will confirm.

Want more than the preloaded tunes? Pair this with our Custom Diablo Tune, built for your exact parts and fuel by N2 Speed.

Frequently Asked Questions

What vehicles does this kit fit?

It fits the 2021 RAM 1500 5.7L with an 8-speed transmission, except E-Torque.

What does the kit do?

It provides preloaded performance calibrations, a performance TCM tune for the 8-speed transmission, and tuner adjustments for functions such as throttle response, idle RPM, tire size and cooling fan temperatures. The supplied information states 25–30 rwhp gains on premium fuel.

What is the emissions status?

Legal under the provisions of EPA's Tampering Policy; not legal in California.

Emissions notice: not legal for sale or use in California or on any pollution-controlled vehicle where prohibited. Check your state's rules before ordering.

Fitment help: call 954-507-6261 or email sales@maxredline.com with your VIN and we will confirm the right part before you order.