LSe9x Holley Can to BMW conversion box

$250.00
LSe9x Holley Can to BMW conversion box
$250.00

LSE9X Holley CAN to BMW Conversion Box – LS / LT Swap Integration

The LSE9X Holley CAN to BMW Conversion Box is a true plug-and-play solution designed specifically for BMW E90, E92, E82, and other E9X / E8X chassis running an LS or LT engine swap with a Holley Terminator X EFI system.

This updated version expands functionality with cruise lever inputs, a tachometer dial control, and a cleaner dash experience for your swap.

Key Features

Plug & Play BMW to Holley Integration

  • Simple 2-wire install at the DME connector.

  • Connect the red/blue twisted pair from the box to the BMW DME’s red/blue PT-CAN pair.

OEM Cluster & Starter Functions

  • Fully functional OEM tachometer.

  • Re-mapped 335i oil temp gauge displays coolant temperature.

  • Clean dash on RWD E9X/E8X chassis with no brake or DSC lights.

    • Note: xDrive chassis may still display DSC or 4x4 errors.

  • Maintains correct starter function through the BMW ignition system.

BMW to Holley Signal Conversion

  • Transmits front and rear wheel speed to the Holley ECU.

  • Sends A/C button status over CAN bus.

  • Frees up Holley ECU analog inputs for other use.

New: Cruise Control Lever Inputs

  • Converts the BMW factory cruise stalk to Holley LCD switch inputs.

  • Provides up to 4 configurable digital inputs.

  • Ideal for 2-step, launch control, nitrous, shifting, or any Holley mappable input.

New: Tachometer Dial Function

  • The cruise stalk’s rotary dial sends a user-settable value to the Holley ECU via an EGT input.

  • Can control boost tables, PWM duty cycles, timing tables, or other custom functions.

  • The dial value is saved and automatically transmitted at every startup.

Chassis Notes

  • Compatible with E9X and E8X BMW chassis (E90, E92, E82, 328i, 335i, etc.).

  • N55 cars require recoding: change chassis coding from N55 to N54 for full functionality.

Why Choose the LSE9X Holley CAN Box?

  • Designed specifically for BMW LS and LT swaps.

  • Eliminates wasted ECU inputs with CAN bus data streaming.

  • Adds cruise lever inputs, tachometer dial control, and correct starter function.

  • Retains OEM BMW cluster functionality for a factory-like swap experience.

  • Developed and supported by LSE90 LLC, specialists in BMW engine swap integration.

⚠️ WARNING
Never flash Holley ECU firmware updates with the CAN box plugged in.
Always disconnect the CAN box and connect directly to the ECU when flashing firmware.