Elite 550 ECU + Plug and Pin Set (HT-150401)

Putting a Haltech Elite 550 behind a serious build starts here: this kit combines the ECU with a matching plug and pin set for building your own harness exactly the way the chassis needs it. One order covers the ECU and the connection layer, so the build is not waiting on a second box of parts.

What You'll Feel

From the driver's seat: crisp, repeatable throttle response and stable idle from fuel and ignition maps built for your combination, with long-term learning refining the tune as you drive.

The plug and pin set matters more than it looks: building a harness from scratch with the correct ECU-side connectors and terminals means factory-grade crimps, no adapters, and a loom routed exactly the way the chassis needs it. For a tube chassis car, a full rewire, or a motorsport build where every wire is specified, this is the right starting point.

Features

• 4 injection and 4 ignition outputs for 1 to 4 cylinder or 2 rotor engines
• Direct flex fuel sensor input with tuning by ethanol content
• Closed loop O2 control with an external CAN wideband controller
• Closed loop idle control with learning
• On-board and laptop data logging
• CAN expansion for Haltech dashes and I/O devices

The Details

• SKU: HT-150401

Kit Includes

• 1 x Elite 550 ECU + Plug and Pins to suit

Applications

Unsure about fitment for your build? Send us your engine and chassis details before ordering and we will confirm compatibility.

Tuned By Shawn is a Platinum Haltech Dealer. If you want help planning the install or a remote Zoom tuning session once it is in, both are services we run in house.