DiabloSport Serial Data Gateway Module

Why Modern FCA Vehicles Need a Gateway Bypass

Starting with the 2018 model year, Fiat Chrysler Automobiles (FCA/Stellantis) introduced a Serial Data Gateway Module (SGW) across its Dodge, Ram, and Jeep lineup. All vehicles built by FCA (Stellantis) after 2018 have a security gateway module that protects the vehicle's computer from being accessed via the OBD2 port by non-authorized tools. While this is a meaningful cybersecurity measure, it also creates a significant hurdle for enthusiasts who want to tune their vehicles with aftermarket programmers.

DiabloSport's Solution: The Serial Data Gateway Bypass Module

As a brand that has spent decades engineering tuning solutions for domestic performance vehicles, DiabloSport developed its own Serial Data Gateway bypass hardware specifically to bridge this gap. The DiabloSport gateway bypass harness is designed for 2018+ Dodge, Ram, and Jeep vehicles — it bypasses the factory gateway module, allows communication on the CAN bus, installs behind the dash, and connects to the vehicle's STAR connectors. Without this module in place, DiabloSport's handheld tuners simply cannot communicate with the PCM on these late-model platforms.

All 2019 and newer FCA applications require some form of bypass — cars typically use a bypass cable, while newer Ram trucks and Jeep JL/JT models use the physical bypass module (box). This makes the Serial Data Gateway Module an essential prerequisite — not an optional accessory — for anyone tuning a supported 2018+ FCA vehicle with DiabloSport hardware.

Purpose-Built for the DiabloSport Ecosystem

DiabloSport is an enthusiast-powered brand, driven by technology, creating innovative tuning solutions for late-model, gas-powered cars and trucks that allow users to tune their vehicles in their own driveway, with products designed for ease of use while providing dyno-verified power gains in a safe manner. The gateway bypass module reflects that same philosophy — it's a purpose-built hardware piece that makes the rest of the DiabloSport tuning ecosystem work seamlessly on FCA platforms where the factory SGW would otherwise block access.

DiabloSport is the creator of the industry's most trusted tuners — the Trinity, inTune i3, and Predator — empowering enthusiasts to take control of their driving experience. Each of these tuner families relies on unobstructed PCM access, which is exactly what the Serial Data Gateway Module provides on 2018+ Dodge, Ram, and Jeep vehicles.

Who Needs This Module?

• Owners of 2018+ Dodge Durango or Jeep Grand Cherokee using a DiabloSport Trinity or inTune i3 tuner
• Ram truck owners running a DiabloSport Predator or modified PCM swap
• Jeep JL/JT owners who need CAN bus access restored after SGW interference
• Any enthusiast pairing a DiabloSport handheld programmer with a late-model FCA/Stellantis platform

If you're building a complete tuning setup for a modern Mopar vehicle, the DiabloSport Serial Data Gateway Module is the critical link that makes it all possible. Explore the full DiabloSport brand catalog or browse all Serial Data Gateway Modules to find the right solution for your build.