Take your Holley EFI installation to the next level with the CarChains3D Holley EFI ECU Stacker Mount System. Designed to maximize space and create a cleaner, more organized wiring layout, these precision 3D printed mounts allow you to securely stack Holley EFI expansion modules directly on top of your existing ECU. Compatible with Holley Dominator, HP, Terminator, and Terminator X Max ECUs, these stacker mounts are engineered to support one or two additional Holley modules, helping simplify wiring while minimizing the space required for your engine management system. Supported modules include: Holley Injector Driver Module (IDM) Holley EFI 8 Channel CAN EGT Controller Holley EFI Ford Coyote Ti-VCT Control Module Holley EFI CAN Input/Output Module Whether you're building a street car, race car, drag car, drift car, or custom swap, these stacker mounts provide a clean, professional solution for organizing your Holley EFI electronics. The modular design allows you to configure either a single-stack or double-stack setup depending on your vehicle's requirements. Manufactured from durable automotive-grade material, each mount is designed to withstand the demanding environment found inside performance vehicles while maintaining a lightweight, factory-quality appearance. Pairs nice with our ECU Rollbar Mounts
