sku: 101-123 x18d 122 ESS E-Flash ECU Tuning Software ESS optimized ECU software is a result of 100's of dyno runs and exact calibration of all parameters to allow maximum performance gains with improved driveability/fuel consumption and stock engine longevity. Part number: 101-123Horsepower: 155DIN... MSRP: Now: $995.00 Add to Cart Compare Selected