Overview Reviews Product Description 554-115 Holley EFI High Current Peak and Hold Water Methanol Solenoid Driver Module High Current Water Methanol Solenoid Driver Product Videos Custom Field Product Reviews Write a Review Write a Review × 554-115 Holley EFI High Current Peak and Hold Water Methanol Solenoid Driver Module Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *