Overview Reviews Product Description 558-432 Holley EFI Digital Dash I/O Adapter Replacement I/O Adapter for Digital Dash Product Videos Custom Field Product Reviews Write a Review Write a Review × 558-432 Holley EFI Digital Dash I/O Adapter Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *