Technically this job requires a scan tool to bleed the air out of the ABS. There is a way around it once it's installed bleed it the best you can and activate the ABS and rebleed it rinse and repeat you will eventually keep your pedal stiff after activating the ABS. Each time you activate the ABS you will have a poor pedal afterwards just keep doing it until you don't have a poor pedal after activating the ABS.